21685256

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1201}}^1$

素因数の和:1305

約数の個数: 32

約数和(自身を含む): 42478680

約数和(自身を除く): 20793424

約数列:

[1, 2, 4, 8, 37, 61, 74, 122, 148, 244, 296, 488, 1201, 2257, 2402, 4514, 4804, 9028, 9608, 18056, 44437, 73261, 88874, 146522, 177748, 293044, 355496, 586088, 2710657, 5421314, 10842628, 21685256]

約数ペア:

[(1, 21685256), (2, 10842628), (4, 5421314), (8, 2710657), (37, 586088), (61, 355496), (74, 293044), (122, 177748), (148, 146522), (244, 88874), (296, 73261), (488, 44437), (1201, 18056), (2257, 9608), (2402, 9028), (4514, 4804)]