638477684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{155423}}^1$

素因数の和:155519

約数の個数: 24

約数和(自身を含む): 1218524160

約数和(自身を除く): 580046476

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 155423, 310846, 621692, 2020499, 4040998, 8081996, 12278417, 24556834, 49113668, 159619421, 319238842, 638477684]

約数ペア:

[(1, 638477684), (2, 319238842), (4, 159619421), (13, 49113668), (26, 24556834), (52, 12278417), (79, 8081996), (158, 4040998), (316, 2020499), (1027, 621692), (2054, 310846), (4108, 155423)]