1397803960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{4992157}}^1$

素因数の和:4992175

約数の個数: 32

約数和(自身を含む): 3594353760

約数和(自身を除く): 2196549800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 4992157, 9984314, 19968628, 24960785, 34945099, 39937256, 49921570, 69890198, 99843140, 139780396, 174725495, 199686280, 279560792, 349450990, 698901980, 1397803960]

約数ペア:

[(1, 1397803960), (2, 698901980), (4, 349450990), (5, 279560792), (7, 199686280), (8, 174725495), (10, 139780396), (14, 99843140), (20, 69890198), (28, 49921570), (35, 39937256), (40, 34945099), (56, 24960785), (70, 19968628), (140, 9984314), (280, 4992157)]