19518220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31481}}^1$

素因数の和:31521

約数の個数: 24

約数和(自身を含む): 42311808

約数和(自身を除く): 22793588

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 31481, 62962, 125924, 157405, 314810, 629620, 975911, 1951822, 3903644, 4879555, 9759110, 19518220]

約数ペア:

[(1, 19518220), (2, 9759110), (4, 4879555), (5, 3903644), (10, 1951822), (20, 975911), (31, 629620), (62, 314810), (124, 157405), (155, 125924), (310, 62962), (620, 31481)]