645327

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:300

約数の個数: 20

約数和(自身を含む): 998976

約数和(自身を除く): 353649

約数列:

[1, 3, 9, 27, 31, 81, 93, 257, 279, 771, 837, 2313, 2511, 6939, 7967, 20817, 23901, 71703, 215109, 645327]

約数ペア:

[(1, 645327), (3, 215109), (9, 71703), (27, 23901), (31, 20817), (81, 7967), (93, 6939), (257, 2511), (279, 2313), (771, 837)]