56438020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{25889}}^1$

素因数の和:26007

約数の個数: 24

約数和(自身を含む): 119611800

約数和(自身を除く): 63173780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 25889, 51778, 103556, 129445, 258890, 517780, 2821901, 5643802, 11287604, 14109505, 28219010, 56438020]

約数ペア:

[(1, 56438020), (2, 28219010), (4, 14109505), (5, 11287604), (10, 5643802), (20, 2821901), (109, 517780), (218, 258890), (436, 129445), (545, 103556), (1090, 51778), (2180, 25889)]