15721329

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{821}}^1$

素因数の和:1328

約数の個数: 16

約数和(自身を含む): 22647744

約数和(自身を除く): 6926415

約数列:

[1, 3, 13, 39, 491, 821, 1473, 2463, 6383, 10673, 19149, 32019, 403111, 1209333, 5240443, 15721329]

約数ペア:

[(1, 15721329), (3, 5240443), (13, 1209333), (39, 403111), (491, 32019), (821, 19149), (1473, 10673), (2463, 6383)]