21725008

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12457}}^1$

素因数の和:12574

約数の個数: 20

約数和(自身を含む): 42481780

約数和(自身を除く): 20756772

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12457, 24914, 49828, 99656, 199312, 1357813, 2715626, 5431252, 10862504, 21725008]

約数ペア:

[(1, 21725008), (2, 10862504), (4, 5431252), (8, 2715626), (16, 1357813), (109, 199312), (218, 99656), (436, 49828), (872, 24914), (1744, 12457)]