21748860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:484

約数の個数: 144

約数和(自身を含む): 77418432

約数和(自身を除く): 55669572

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 41, 42, 45, 60, 63, 70, 82, 84, 90, 105, 123, 126, 140, 164, 180, 205, 210, 246, 252, 287, 315, 369, 410, 420, 421, 492, 574, 615, 630, 738, 820, 842, 861, 1148, 1230, 1260, 1263, 1435, 1476, 1684, 1722, 1845, 2105, 2460, 2526, 2583, 2870, 2947, 3444, 3690, 3789, 4210, 4305, 5052, 5166, 5740, 5894, 6315, 7380, 7578, 8420, 8610, 8841, 10332, 11788, 12630, 12915, 14735, 15156, 17220, 17261, 17682, 18945, 25260, 25830, 26523, 29470, 34522, 35364, 37890, 44205, 51660, 51783, 53046, 58940, 69044, 75780, 86305, 88410, 103566, 106092, 120827, 132615, 155349, 172610, 176820, 207132, 241654, 258915, 265230, 310698, 345220, 362481, 483308, 517830, 530460, 604135, 621396, 724962, 776745, 1035660, 1087443, 1208270, 1449924, 1553490, 1812405, 2174886, 2416540, 3106980, 3624810, 4349772, 5437215, 7249620, 10874430, 21748860]

約数ペア:

[(1, 21748860), (2, 10874430), (3, 7249620), (4, 5437215), (5, 4349772), (6, 3624810), (7, 3106980), (9, 2416540), (10, 2174886), (12, 1812405), (14, 1553490), (15, 1449924), (18, 1208270), (20, 1087443), (21, 1035660), (28, 776745), (30, 724962), (35, 621396), (36, 604135), (41, 530460), (42, 517830), (45, 483308), (60, 362481), (63, 345220), (70, 310698), (82, 265230), (84, 258915), (90, 241654), (105, 207132), (123, 176820), (126, 172610), (140, 155349), (164, 132615), (180, 120827), (205, 106092), (210, 103566), (246, 88410), (252, 86305), (287, 75780), (315, 69044), (369, 58940), (410, 53046), (420, 51783), (421, 51660), (492, 44205), (574, 37890), (615, 35364), (630, 34522), (738, 29470), (820, 26523), (842, 25830), (861, 25260), (1148, 18945), (1230, 17682), (1260, 17261), (1263, 17220), (1435, 15156), (1476, 14735), (1684, 12915), (1722, 12630), (1845, 11788), (2105, 10332), (2460, 8841), (2526, 8610), (2583, 8420), (2870, 7578), (2947, 7380), (3444, 6315), (3690, 5894), (3789, 5740), (4210, 5166), (4305, 5052)]