20542905

素因数分解:

$3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1487}}^1$

素因数の和:1805

約数の個数: 24

約数和(自身を含む): 35747712

約数和(自身を除く): 15204807

約数列:

[1, 3, 5, 9, 15, 45, 307, 921, 1487, 1535, 2763, 4461, 4605, 7435, 13383, 13815, 22305, 66915, 456509, 1369527, 2282545, 4108581, 6847635, 20542905]

約数ペア:

[(1, 20542905), (3, 6847635), (5, 4108581), (9, 2282545), (15, 1369527), (45, 456509), (307, 66915), (921, 22305), (1487, 13815), (1535, 13383), (2763, 7435), (4461, 4605)]