19641920

素因数分解:

$2^6\times 5^1\times {\mathrm{61381}}^1$

素因数の和:61398

約数の個数: 28

約数和(自身を含む): 46773084

約数和(自身を除く): 27131164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 61381, 122762, 245524, 306905, 491048, 613810, 982096, 1227620, 1964192, 2455240, 3928384, 4910480, 9820960, 19641920]

約数ペア:

[(1, 19641920), (2, 9820960), (4, 4910480), (5, 3928384), (8, 2455240), (10, 1964192), (16, 1227620), (20, 982096), (32, 613810), (40, 491048), (64, 306905), (80, 245524), (160, 122762), (320, 61381)]