20118511

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{457}}^1$

素因数の和:814

約数の個数: 16

約数和(自身を含む): 24328960

約数和(自身を除く): 4210449

約数列:

[1, 7, 19, 133, 331, 457, 2317, 3199, 6289, 8683, 44023, 60781, 151267, 1058869, 2874073, 20118511]

約数ペア:

[(1, 20118511), (7, 2874073), (19, 1058869), (133, 151267), (331, 60781), (457, 44023), (2317, 8683), (3199, 6289)]