661738140

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:402

約数の個数: 288

約数和(自身を含む): 2430388800

約数和(自身を除く): 1768650660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 84, 89, 90, 98, 105, 108, 126, 135, 140, 147, 178, 180, 189, 196, 210, 245, 252, 267, 270, 281, 294, 315, 356, 378, 420, 441, 445, 490, 534, 540, 562, 588, 623, 630, 735, 756, 801, 843, 882, 890, 945, 980, 1068, 1124, 1246, 1260, 1323, 1335, 1405, 1470, 1602, 1686, 1764, 1780, 1869, 1890, 1967, 2205, 2403, 2492, 2529, 2646, 2670, 2810, 2940, 3115, 3204, 3372, 3738, 3780, 3934, 4005, 4215, 4361, 4410, 4806, 5058, 5292, 5340, 5607, 5620, 5901, 6230, 6615, 7476, 7587, 7868, 8010, 8430, 8722, 8820, 9345, 9612, 9835, 10116, 11214, 11802, 12015, 12460, 12645, 13083, 13230, 13769, 15174, 16020, 16821, 16860, 17444, 17703, 18690, 19670, 21805, 22428, 23604, 24030, 25009, 25290, 26166, 26460, 27538, 28035, 29505, 30348, 33642, 35406, 37380, 37935, 39249, 39340, 41307, 43610, 48060, 50018, 50580, 52332, 53109, 55076, 56070, 59010, 65415, 67284, 68845, 70812, 75027, 75870, 78498, 82614, 84105, 87220, 88515, 100036, 106218, 112140, 117747, 118020, 123921, 125045, 130830, 137690, 150054, 151740, 156996, 165228, 168210, 175063, 177030, 196245, 206535, 212436, 225081, 235494, 247842, 250090, 261660, 265545, 275380, 300108, 336420, 350126, 354060, 371763, 375135, 392490, 413070, 450162, 470988, 495684, 500180, 525189, 531090, 588735, 619605, 675243, 700252, 743526, 750270, 784980, 826140, 875315, 900324, 1050378, 1062180, 1125405, 1177470, 1225441, 1239210, 1350486, 1487052, 1500540, 1575567, 1750630, 1858815, 2100756, 2250810, 2354940, 2450882, 2478420, 2625945, 2700972, 3151134, 3376215, 3501260, 3676323, 3717630, 4501620, 4726701, 4901764, 5251890, 6127205, 6302268, 6752430, 7352646, 7435260, 7877835, 9453402, 10503780, 11028969, 12254410, 13504860, 14705292, 15755670, 18381615, 18906804, 22057938, 23633505, 24508820, 31511340, 33086907, 36763230, 44115876, 47267010, 55144845, 66173814, 73526460, 94534020, 110289690, 132347628, 165434535, 220579380, 330869070, 661738140]

約数ペア:

[(1, 661738140), (2, 330869070), (3, 220579380), (4, 165434535), (5, 132347628), (6, 110289690), (7, 94534020), (9, 73526460), (10, 66173814), (12, 55144845), (14, 47267010), (15, 44115876), (18, 36763230), (20, 33086907), (21, 31511340), (27, 24508820), (28, 23633505), (30, 22057938), (35, 18906804), (36, 18381615), (42, 15755670), (45, 14705292), (49, 13504860), (54, 12254410), (60, 11028969), (63, 10503780), (70, 9453402), (84, 7877835), (89, 7435260), (90, 7352646), (98, 6752430), (105, 6302268), (108, 6127205), (126, 5251890), (135, 4901764), (140, 4726701), (147, 4501620), (178, 3717630), (180, 3676323), (189, 3501260), (196, 3376215), (210, 3151134), (245, 2700972), (252, 2625945), (267, 2478420), (270, 2450882), (281, 2354940), (294, 2250810), (315, 2100756), (356, 1858815), (378, 1750630), (420, 1575567), (441, 1500540), (445, 1487052), (490, 1350486), (534, 1239210), (540, 1225441), (562, 1177470), (588, 1125405), (623, 1062180), (630, 1050378), (735, 900324), (756, 875315), (801, 826140), (843, 784980), (882, 750270), (890, 743526), (945, 700252), (980, 675243), (1068, 619605), (1124, 588735), (1246, 531090), (1260, 525189), (1323, 500180), (1335, 495684), (1405, 470988), (1470, 450162), (1602, 413070), (1686, 392490), (1764, 375135), (1780, 371763), (1869, 354060), (1890, 350126), (1967, 336420), (2205, 300108), (2403, 275380), (2492, 265545), (2529, 261660), (2646, 250090), (2670, 247842), (2810, 235494), (2940, 225081), (3115, 212436), (3204, 206535), (3372, 196245), (3738, 177030), (3780, 175063), (3934, 168210), (4005, 165228), (4215, 156996), (4361, 151740), (4410, 150054), (4806, 137690), (5058, 130830), (5292, 125045), (5340, 123921), (5607, 118020), (5620, 117747), (5901, 112140), (6230, 106218), (6615, 100036), (7476, 88515), (7587, 87220), (7868, 84105), (8010, 82614), (8430, 78498), (8722, 75870), (8820, 75027), (9345, 70812), (9612, 68845), (9835, 67284), (10116, 65415), (11214, 59010), (11802, 56070), (12015, 55076), (12460, 53109), (12645, 52332), (13083, 50580), (13230, 50018), (13769, 48060), (15174, 43610), (16020, 41307), (16821, 39340), (16860, 39249), (17444, 37935), (17703, 37380), (18690, 35406), (19670, 33642), (21805, 30348), (22428, 29505), (23604, 28035), (24030, 27538), (25009, 26460), (25290, 26166)]