21265030

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{5303}}^1$

素因数の和:5711

約数の個数: 16

約数和(自身を含む): 38379744

約数和(自身を除く): 17114714

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 5303, 10606, 26515, 53030, 2126503, 4253006, 10632515, 21265030]

約数ペア:

[(1, 21265030), (2, 10632515), (5, 4253006), (10, 2126503), (401, 53030), (802, 26515), (2005, 10606), (4010, 5303)]