20982780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:106

約数の個数: 288

約数和(自身を含む): 83119680

約数和(自身を除く): 62136900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 49, 52, 54, 60, 61, 63, 65, 70, 78, 84, 90, 91, 98, 105, 108, 117, 122, 126, 130, 135, 140, 147, 156, 180, 182, 183, 189, 195, 196, 210, 234, 244, 245, 252, 260, 270, 273, 294, 305, 315, 351, 364, 366, 378, 390, 420, 427, 441, 455, 468, 490, 540, 546, 549, 585, 588, 610, 630, 637, 702, 732, 735, 756, 780, 793, 819, 854, 882, 910, 915, 945, 980, 1092, 1098, 1170, 1220, 1260, 1274, 1281, 1323, 1365, 1404, 1470, 1586, 1638, 1647, 1708, 1755, 1764, 1820, 1830, 1890, 1911, 2135, 2196, 2205, 2340, 2379, 2457, 2548, 2562, 2646, 2730, 2745, 2940, 2989, 3172, 3185, 3276, 3294, 3510, 3660, 3780, 3822, 3843, 3965, 4095, 4270, 4410, 4758, 4914, 5124, 5292, 5460, 5490, 5551, 5733, 5978, 6370, 6405, 6588, 6615, 7020, 7137, 7644, 7686, 7930, 8190, 8235, 8540, 8820, 8967, 9516, 9555, 9828, 10980, 11102, 11466, 11529, 11895, 11956, 12285, 12740, 12810, 13230, 14274, 14945, 15372, 15860, 16380, 16470, 16653, 17199, 17934, 19110, 19215, 21411, 22204, 22932, 23058, 23790, 24570, 25620, 26460, 26901, 27755, 28548, 28665, 29890, 32940, 33306, 34398, 35685, 35868, 38220, 38430, 38857, 42822, 44835, 46116, 47580, 49140, 49959, 53802, 55510, 57330, 57645, 59780, 66612, 68796, 71370, 76860, 77714, 80703, 83265, 85644, 85995, 89670, 99918, 107055, 107604, 111020, 114660, 115290, 116571, 134505, 142740, 149877, 155428, 161406, 166530, 171990, 179340, 194285, 199836, 214110, 230580, 233142, 249795, 269010, 299754, 322812, 333060, 343980, 349713, 388570, 403515, 428220, 466284, 499590, 538020, 582855, 599508, 699426, 749385, 777140, 807030, 999180, 1049139, 1165710, 1398852, 1498770, 1614060, 1748565, 2098278, 2331420, 2997540, 3497130, 4196556, 5245695, 6994260, 10491390, 20982780]

約数ペア:

[(1, 20982780), (2, 10491390), (3, 6994260), (4, 5245695), (5, 4196556), (6, 3497130), (7, 2997540), (9, 2331420), (10, 2098278), (12, 1748565), (13, 1614060), (14, 1498770), (15, 1398852), (18, 1165710), (20, 1049139), (21, 999180), (26, 807030), (27, 777140), (28, 749385), (30, 699426), (35, 599508), (36, 582855), (39, 538020), (42, 499590), (45, 466284), (49, 428220), (52, 403515), (54, 388570), (60, 349713), (61, 343980), (63, 333060), (65, 322812), (70, 299754), (78, 269010), (84, 249795), (90, 233142), (91, 230580), (98, 214110), (105, 199836), (108, 194285), (117, 179340), (122, 171990), (126, 166530), (130, 161406), (135, 155428), (140, 149877), (147, 142740), (156, 134505), (180, 116571), (182, 115290), (183, 114660), (189, 111020), (195, 107604), (196, 107055), (210, 99918), (234, 89670), (244, 85995), (245, 85644), (252, 83265), (260, 80703), (270, 77714), (273, 76860), (294, 71370), (305, 68796), (315, 66612), (351, 59780), (364, 57645), (366, 57330), (378, 55510), (390, 53802), (420, 49959), (427, 49140), (441, 47580), (455, 46116), (468, 44835), (490, 42822), (540, 38857), (546, 38430), (549, 38220), (585, 35868), (588, 35685), (610, 34398), (630, 33306), (637, 32940), (702, 29890), (732, 28665), (735, 28548), (756, 27755), (780, 26901), (793, 26460), (819, 25620), (854, 24570), (882, 23790), (910, 23058), (915, 22932), (945, 22204), (980, 21411), (1092, 19215), (1098, 19110), (1170, 17934), (1220, 17199), (1260, 16653), (1274, 16470), (1281, 16380), (1323, 15860), (1365, 15372), (1404, 14945), (1470, 14274), (1586, 13230), (1638, 12810), (1647, 12740), (1708, 12285), (1755, 11956), (1764, 11895), (1820, 11529), (1830, 11466), (1890, 11102), (1911, 10980), (2135, 9828), (2196, 9555), (2205, 9516), (2340, 8967), (2379, 8820), (2457, 8540), (2548, 8235), (2562, 8190), (2646, 7930), (2730, 7686), (2745, 7644), (2940, 7137), (2989, 7020), (3172, 6615), (3185, 6588), (3276, 6405), (3294, 6370), (3510, 5978), (3660, 5733), (3780, 5551), (3822, 5490), (3843, 5460), (3965, 5292), (4095, 5124), (4270, 4914), (4410, 4758)]