249926430

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{640837}}^1$

素因数の和:640860

約数の個数: 32

約数和(自身を含む): 645964704

約数和(自身を除く): 396038274

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 640837, 1281674, 1922511, 3204185, 3845022, 6408370, 8330881, 9612555, 16661762, 19225110, 24992643, 41654405, 49985286, 83308810, 124963215, 249926430]

約数ペア:

[(1, 249926430), (2, 124963215), (3, 83308810), (5, 49985286), (6, 41654405), (10, 24992643), (13, 19225110), (15, 16661762), (26, 9612555), (30, 8330881), (39, 6408370), (65, 3845022), (78, 3204185), (130, 1922511), (195, 1281674), (390, 640837)]