20920505

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1901}}^1$

素因数の和:2008

約数の個数: 16

約数和(自身を含む): 26293248

約数和(自身を除く): 5372743

約数列:

[1, 5, 31, 71, 155, 355, 1901, 2201, 9505, 11005, 58931, 134971, 294655, 674855, 4184101, 20920505]

約数ペア:

[(1, 20920505), (5, 4184101), (31, 674855), (71, 294655), (155, 134971), (355, 58931), (1901, 11005), (2201, 9505)]