281010280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{69557}}^1$

素因数の和:69669

約数の個数: 32

約数和(自身を含む): 638542440

約数和(自身を除く): 357532160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 69557, 139114, 278228, 347785, 556456, 695570, 1391140, 2782280, 7025257, 14050514, 28101028, 35126285, 56202056, 70252570, 140505140, 281010280]

約数ペア:

[(1, 281010280), (2, 140505140), (4, 70252570), (5, 56202056), (8, 35126285), (10, 28101028), (20, 14050514), (40, 7025257), (101, 2782280), (202, 1391140), (404, 695570), (505, 556456), (808, 347785), (1010, 278228), (2020, 139114), (4040, 69557)]