389173640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{237301}}^1$

素因数の和:237353

約数の個数: 32

約数和(自身を含む): 897001560

約数和(自身を除く): 507827920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 237301, 474602, 949204, 1186505, 1898408, 2373010, 4746020, 9492040, 9729341, 19458682, 38917364, 48646705, 77834728, 97293410, 194586820, 389173640]

約数ペア:

[(1, 389173640), (2, 194586820), (4, 97293410), (5, 77834728), (8, 48646705), (10, 38917364), (20, 19458682), (40, 9729341), (41, 9492040), (82, 4746020), (164, 2373010), (205, 1898408), (328, 1186505), (410, 949204), (820, 474602), (1640, 237301)]