21651507

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2389}}^1$

素因数の和:2467

約数の個数: 24

約数和(自身を含む): 33555600

約数和(自身を除く): 11904093

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 2389, 3021, 7167, 9063, 21501, 45391, 126617, 136173, 379851, 408519, 1139553, 2405723, 7217169, 21651507]

約数ペア:

[(1, 21651507), (3, 7217169), (9, 2405723), (19, 1139553), (53, 408519), (57, 379851), (159, 136173), (171, 126617), (477, 45391), (1007, 21501), (2389, 9063), (3021, 7167)]