257697720

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{383}}^1$

素因数の和:499

約数の個数: 256

約数和(自身を含む): 995328000

約数和(自身を除く): 737630280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 89, 90, 105, 108, 120, 126, 135, 140, 168, 178, 180, 189, 210, 216, 252, 267, 270, 280, 315, 356, 360, 378, 383, 420, 445, 504, 534, 540, 623, 630, 712, 756, 766, 801, 840, 890, 945, 1068, 1080, 1149, 1246, 1260, 1335, 1512, 1532, 1602, 1780, 1869, 1890, 1915, 2136, 2298, 2403, 2492, 2520, 2670, 2681, 3064, 3115, 3204, 3447, 3560, 3738, 3780, 3830, 4005, 4596, 4806, 4984, 5340, 5362, 5607, 5745, 6230, 6408, 6894, 7476, 7560, 7660, 8010, 8043, 9192, 9345, 9612, 10341, 10680, 10724, 11214, 11490, 12015, 12460, 13405, 13788, 14952, 15320, 16020, 16086, 16821, 17235, 18690, 19224, 20682, 21448, 22428, 22980, 24030, 24129, 24920, 26810, 27576, 28035, 32040, 32172, 33642, 34087, 34470, 37380, 40215, 41364, 44856, 45960, 48060, 48258, 51705, 53620, 56070, 64344, 67284, 68174, 68940, 72387, 74760, 80430, 82728, 84105, 96120, 96516, 102261, 103410, 107240, 112140, 120645, 134568, 136348, 137880, 144774, 160860, 168210, 170435, 193032, 204522, 206820, 224280, 238609, 241290, 272696, 289548, 306783, 321720, 336420, 340870, 361935, 409044, 413640, 477218, 482580, 511305, 579096, 613566, 672840, 681740, 715827, 723870, 818088, 920349, 954436, 965160, 1022610, 1193045, 1227132, 1363480, 1431654, 1447740, 1533915, 1840698, 1908872, 2045220, 2147481, 2386090, 2454264, 2863308, 2895480, 3067830, 3579135, 3681396, 4090440, 4294962, 4601745, 4772180, 5726616, 6135660, 6442443, 7158270, 7362792, 8589924, 9203490, 9544360, 10737405, 12271320, 12884886, 14316540, 17179848, 18406980, 21474810, 25769772, 28633080, 32212215, 36813960, 42949620, 51539544, 64424430, 85899240, 128848860, 257697720]

約数ペア:

[(1, 257697720), (2, 128848860), (3, 85899240), (4, 64424430), (5, 51539544), (6, 42949620), (7, 36813960), (8, 32212215), (9, 28633080), (10, 25769772), (12, 21474810), (14, 18406980), (15, 17179848), (18, 14316540), (20, 12884886), (21, 12271320), (24, 10737405), (27, 9544360), (28, 9203490), (30, 8589924), (35, 7362792), (36, 7158270), (40, 6442443), (42, 6135660), (45, 5726616), (54, 4772180), (56, 4601745), (60, 4294962), (63, 4090440), (70, 3681396), (72, 3579135), (84, 3067830), (89, 2895480), (90, 2863308), (105, 2454264), (108, 2386090), (120, 2147481), (126, 2045220), (135, 1908872), (140, 1840698), (168, 1533915), (178, 1447740), (180, 1431654), (189, 1363480), (210, 1227132), (216, 1193045), (252, 1022610), (267, 965160), (270, 954436), (280, 920349), (315, 818088), (356, 723870), (360, 715827), (378, 681740), (383, 672840), (420, 613566), (445, 579096), (504, 511305), (534, 482580), (540, 477218), (623, 413640), (630, 409044), (712, 361935), (756, 340870), (766, 336420), (801, 321720), (840, 306783), (890, 289548), (945, 272696), (1068, 241290), (1080, 238609), (1149, 224280), (1246, 206820), (1260, 204522), (1335, 193032), (1512, 170435), (1532, 168210), (1602, 160860), (1780, 144774), (1869, 137880), (1890, 136348), (1915, 134568), (2136, 120645), (2298, 112140), (2403, 107240), (2492, 103410), (2520, 102261), (2670, 96516), (2681, 96120), (3064, 84105), (3115, 82728), (3204, 80430), (3447, 74760), (3560, 72387), (3738, 68940), (3780, 68174), (3830, 67284), (4005, 64344), (4596, 56070), (4806, 53620), (4984, 51705), (5340, 48258), (5362, 48060), (5607, 45960), (5745, 44856), (6230, 41364), (6408, 40215), (6894, 37380), (7476, 34470), (7560, 34087), (7660, 33642), (8010, 32172), (8043, 32040), (9192, 28035), (9345, 27576), (9612, 26810), (10341, 24920), (10680, 24129), (10724, 24030), (11214, 22980), (11490, 22428), (12015, 21448), (12460, 20682), (13405, 19224), (13788, 18690), (14952, 17235), (15320, 16821), (16020, 16086)]