721827207

素因数分解:

$3^4\times {\mathrm{1747}}^1\times {\mathrm{5101}}^1$

素因数の和:6860

約数の個数: 20

約数和(自身を含む): 1079113816

約数和(自身を除く): 357286609

約数列:

[1, 3, 9, 27, 81, 1747, 5101, 5241, 15303, 15723, 45909, 47169, 137727, 141507, 413181, 8911447, 26734341, 80203023, 240609069, 721827207]

約数ペア:

[(1, 721827207), (3, 240609069), (9, 80203023), (27, 26734341), (81, 8911447), (1747, 413181), (5101, 141507), (5241, 137727), (15303, 47169), (15723, 45909)]