18718220

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{19913}}^1$

素因数の和:19969

約数の個数: 24

約数和(自身を含む): 40146624

約数和(自身を除く): 21428404

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 19913, 39826, 79652, 99565, 199130, 398260, 935911, 1871822, 3743644, 4679555, 9359110, 18718220]

約数ペア:

[(1, 18718220), (2, 9359110), (4, 4679555), (5, 3743644), (10, 1871822), (20, 935911), (47, 398260), (94, 199130), (188, 99565), (235, 79652), (470, 39826), (940, 19913)]