20211455

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4129}}^1$

素因数の和:4234

約数の個数: 16

約数和(自身を含む): 26762400

約数和(自身を除く): 6550945

約数列:

[1, 5, 11, 55, 89, 445, 979, 4129, 4895, 20645, 45419, 227095, 367481, 1837405, 4042291, 20211455]

約数ペア:

[(1, 20211455), (5, 4042291), (11, 1837405), (55, 367481), (89, 227095), (445, 45419), (979, 20645), (4129, 4895)]