86821640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1609}}^1$

素因数の和:1710

約数の個数: 64

約数和(自身を含む): 208656000

約数和(自身を除く): 121834360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 71, 76, 95, 142, 152, 190, 284, 355, 380, 568, 710, 760, 1349, 1420, 1609, 2698, 2840, 3218, 5396, 6436, 6745, 8045, 10792, 12872, 13490, 16090, 26980, 30571, 32180, 53960, 61142, 64360, 114239, 122284, 152855, 228478, 244568, 305710, 456956, 571195, 611420, 913912, 1142390, 1222840, 2170541, 2284780, 4341082, 4569560, 8682164, 10852705, 17364328, 21705410, 43410820, 86821640]

約数ペア:

[(1, 86821640), (2, 43410820), (4, 21705410), (5, 17364328), (8, 10852705), (10, 8682164), (19, 4569560), (20, 4341082), (38, 2284780), (40, 2170541), (71, 1222840), (76, 1142390), (95, 913912), (142, 611420), (152, 571195), (190, 456956), (284, 305710), (355, 244568), (380, 228478), (568, 152855), (710, 122284), (760, 114239), (1349, 64360), (1420, 61142), (1609, 53960), (2698, 32180), (2840, 30571), (3218, 26980), (5396, 16090), (6436, 13490), (6745, 12872), (8045, 10792)]