128589028220

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{35521831}}^1$

素因数の和:35522021

約数の個数: 24

約数和(自身を含む): 271528883808

約数和(自身を除く): 142939855588

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 35521831, 71043662, 142087324, 177609155, 355218310, 710436620, 6429451411, 12858902822, 25717805644, 32147257055, 64294514110, 128589028220]

約数ペア:

[(1, 128589028220), (2, 64294514110), (4, 32147257055), (5, 25717805644), (10, 12858902822), (20, 6429451411), (181, 710436620), (362, 355218310), (724, 177609155), (905, 142087324), (1810, 71043662), (3620, 35521831)]