20461780

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4507}}^1$

素因数の和:4743

約数の個数: 24

約数和(自身を含む): 43168608

約数和(自身を除く): 22706828

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4507, 4540, 9014, 18028, 22535, 45070, 90140, 1023089, 2046178, 4092356, 5115445, 10230890, 20461780]

約数ペア:

[(1, 20461780), (2, 10230890), (4, 5115445), (5, 4092356), (10, 2046178), (20, 1023089), (227, 90140), (454, 45070), (908, 22535), (1135, 18028), (2270, 9014), (4507, 4540)]