21250655

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1931}}^1$

素因数の和:2038

約数の個数: 16

約数和(自身を含む): 26707968

約数和(自身を除く): 5457313

約数列:

[1, 5, 31, 71, 155, 355, 1931, 2201, 9655, 11005, 59861, 137101, 299305, 685505, 4250131, 21250655]

約数ペア:

[(1, 21250655), (5, 4250131), (31, 685505), (71, 299305), (155, 137101), (355, 59861), (1931, 11005), (2201, 9655)]