21265610

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{15299}}^1$

素因数の和:15445

約数の個数: 16

約数和(自身を含む): 38556000

約数和(自身を除く): 17290390

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 15299, 30598, 76495, 152990, 2126561, 4253122, 10632805, 21265610]

約数ペア:

[(1, 21265610), (2, 10632805), (5, 4253122), (10, 2126561), (139, 152990), (278, 76495), (695, 30598), (1390, 15299)]