639778893

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{207653}}^1$

素因数の和:207748

約数の個数: 16

約数和(自身を含む): 930289920

約数和(自身を除く): 290511027

約数列:

[1, 3, 13, 39, 79, 237, 1027, 3081, 207653, 622959, 2699489, 8098467, 16404587, 49213761, 213259631, 639778893]

約数ペア:

[(1, 639778893), (3, 213259631), (13, 49213761), (39, 16404587), (79, 8098467), (237, 2699489), (1027, 622959), (3081, 207653)]