315640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{607}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 766080

約数和(自身を除く): 450440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 607, 1214, 2428, 3035, 4856, 6070, 7891, 12140, 15782, 24280, 31564, 39455, 63128, 78910, 157820, 315640]

約数ペア:

[(1, 315640), (2, 157820), (4, 78910), (5, 63128), (8, 39455), (10, 31564), (13, 24280), (20, 15782), (26, 12140), (40, 7891), (52, 6070), (65, 4856), (104, 3035), (130, 2428), (260, 1214), (520, 607)]