18850220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15451}}^1$

素因数の和:15521

約数の個数: 24

約数和(自身を含む): 40237008

約数和(自身を除く): 21386788

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15451, 30902, 61804, 77255, 154510, 309020, 942511, 1885022, 3770044, 4712555, 9425110, 18850220]

約数ペア:

[(1, 18850220), (2, 9425110), (4, 4712555), (5, 3770044), (10, 1885022), (20, 942511), (61, 309020), (122, 154510), (244, 77255), (305, 61804), (610, 30902), (1220, 15451)]