21017070

素因数分解:

$2^1\times 3^7\times 5^1\times {\mathrm{31}}^2$

素因数の和:90

約数の個数: 96

約数和(自身を含む): 58626720

約数和(自身を除く): 37609650

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 31, 45, 54, 62, 81, 90, 93, 135, 155, 162, 186, 243, 270, 279, 310, 405, 465, 486, 558, 729, 810, 837, 930, 961, 1215, 1395, 1458, 1674, 1922, 2187, 2430, 2511, 2790, 2883, 3645, 4185, 4374, 4805, 5022, 5766, 7290, 7533, 8370, 8649, 9610, 10935, 12555, 14415, 15066, 17298, 21870, 22599, 25110, 25947, 28830, 37665, 43245, 45198, 51894, 67797, 75330, 77841, 86490, 112995, 129735, 135594, 155682, 225990, 233523, 259470, 338985, 389205, 467046, 677970, 700569, 778410, 1167615, 1401138, 2101707, 2335230, 3502845, 4203414, 7005690, 10508535, 21017070]

約数ペア:

[(1, 21017070), (2, 10508535), (3, 7005690), (5, 4203414), (6, 3502845), (9, 2335230), (10, 2101707), (15, 1401138), (18, 1167615), (27, 778410), (30, 700569), (31, 677970), (45, 467046), (54, 389205), (62, 338985), (81, 259470), (90, 233523), (93, 225990), (135, 155682), (155, 135594), (162, 129735), (186, 112995), (243, 86490), (270, 77841), (279, 75330), (310, 67797), (405, 51894), (465, 45198), (486, 43245), (558, 37665), (729, 28830), (810, 25947), (837, 25110), (930, 22599), (961, 21870), (1215, 17298), (1395, 15066), (1458, 14415), (1674, 12555), (1922, 10935), (2187, 9610), (2430, 8649), (2511, 8370), (2790, 7533), (2883, 7290), (3645, 5766), (4185, 5022), (4374, 4805)]