1640991805

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{613}}^1$

素因数の和:877

約数の個数: 32

約数和(自身を含む): 2050190208

約数和(自身を除く): 409198403

約数列:

[1, 5, 61, 67, 131, 305, 335, 613, 655, 3065, 4087, 7991, 8777, 20435, 37393, 39955, 41071, 43885, 80303, 186965, 205355, 401515, 535397, 2505331, 2676985, 4898483, 5380301, 12526655, 24492415, 26901505, 328198361, 1640991805]

約数ペア:

[(1, 1640991805), (5, 328198361), (61, 26901505), (67, 24492415), (131, 12526655), (305, 5380301), (335, 4898483), (613, 2676985), (655, 2505331), (3065, 535397), (4087, 401515), (7991, 205355), (8777, 186965), (20435, 80303), (37393, 43885), (39955, 41071)]