21266660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62549}}^1$

素因数の和:62575

約数の個数: 24

約数和(自身を含む): 47287800

約数和(自身を除く): 26021140

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62549, 125098, 250196, 312745, 625490, 1063333, 1250980, 2126666, 4253332, 5316665, 10633330, 21266660]

約数ペア:

[(1, 21266660), (2, 10633330), (4, 5316665), (5, 4253332), (10, 2126666), (17, 1250980), (20, 1063333), (34, 625490), (68, 312745), (85, 250196), (170, 125098), (340, 62549)]