128570480

素因数分解:

$2^4\times 5^1\times {\mathrm{1607131}}^1$

素因数の和:1607144

約数の個数: 20

約数和(自身を含む): 298926552

約数和(自身を除く): 170356072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1607131, 3214262, 6428524, 8035655, 12857048, 16071310, 25714096, 32142620, 64285240, 128570480]

約数ペア:

[(1, 128570480), (2, 64285240), (4, 32142620), (5, 25714096), (8, 16071310), (10, 12857048), (16, 8035655), (20, 6428524), (40, 3214262), (80, 1607131)]