19828220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31981}}^1$

素因数の和:32021

約数の個数: 24

約数和(自身を含む): 42983808

約数和(自身を除く): 23155588

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 31981, 63962, 127924, 159905, 319810, 639620, 991411, 1982822, 3965644, 4957055, 9914110, 19828220]

約数ペア:

[(1, 19828220), (2, 9914110), (4, 4957055), (5, 3965644), (10, 1982822), (20, 991411), (31, 639620), (62, 319810), (124, 159905), (155, 127924), (310, 63962), (620, 31981)]