8720991

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:495

約数の個数: 24

約数和(自身を含む): 13141440

約数和(自身を除く): 4420449

約数列:

[1, 3, 9, 47, 53, 141, 159, 389, 423, 477, 1167, 2491, 3501, 7473, 18283, 20617, 22419, 54849, 61851, 164547, 185553, 968999, 2906997, 8720991]

約数ペア:

[(1, 8720991), (3, 2906997), (9, 968999), (47, 185553), (53, 164547), (141, 61851), (159, 54849), (389, 22419), (423, 20617), (477, 18283), (1167, 7473), (2491, 3501)]