256487391

素因数分解:

$3^4\times {\mathrm{239}}^1\times {\mathrm{13249}}^1$

素因数の和:13500

約数の個数: 20

約数和(自身を含む): 384780000

約数和(自身を除く): 128292609

約数列:

[1, 3, 9, 27, 81, 239, 717, 2151, 6453, 13249, 19359, 39747, 119241, 357723, 1073169, 3166511, 9499533, 28498599, 85495797, 256487391]

約数ペア:

[(1, 256487391), (3, 85495797), (9, 28498599), (27, 9499533), (81, 3166511), (239, 1073169), (717, 357723), (2151, 119241), (6453, 39747), (13249, 19359)]