2720997

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 4118400

約数和(自身を除く): 1397403

約数列:

[1, 3, 9, 43, 79, 89, 129, 237, 267, 387, 711, 801, 3397, 3827, 7031, 10191, 11481, 21093, 30573, 34443, 63279, 302333, 906999, 2720997]

約数ペア:

[(1, 2720997), (3, 906999), (9, 302333), (43, 63279), (79, 34443), (89, 30573), (129, 21093), (237, 11481), (267, 10191), (387, 7031), (711, 3827), (801, 3397)]