21100910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124123}}^1$

素因数の和:124147

約数の個数: 16

約数和(自身を含む): 40216176

約数和(自身を除く): 19115266

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124123, 248246, 620615, 1241230, 2110091, 4220182, 10550455, 21100910]

約数ペア:

[(1, 21100910), (2, 10550455), (5, 4220182), (10, 2110091), (17, 1241230), (34, 620615), (85, 248246), (170, 124123)]