20920010

素因数分解:

$2^1\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2111}}^1$

素因数の和:3109

約数の個数: 16

約数和(自身を含む): 37711872

約数和(自身を除く): 16791862

約数列:

[1, 2, 5, 10, 991, 1982, 2111, 4222, 4955, 9910, 10555, 21110, 2092001, 4184002, 10460005, 20920010]

約数ペア:

[(1, 20920010), (2, 10460005), (5, 4184002), (10, 2092001), (991, 21110), (1982, 10555), (2111, 9910), (4222, 4955)]