204780158

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{20639}}^1$

素因数の和:20704

約数の個数: 24

約数和(自身を含む): 345885120

約数和(自身を除く): 141104962

約数列:

[1, 2, 11, 22, 41, 82, 121, 242, 451, 902, 4961, 9922, 20639, 41278, 227029, 454058, 846199, 1692398, 2497319, 4994638, 9308189, 18616378, 102390079, 204780158]

約数ペア:

[(1, 204780158), (2, 102390079), (11, 18616378), (22, 9308189), (41, 4994638), (82, 2497319), (121, 1692398), (242, 846199), (451, 454058), (902, 227029), (4961, 41278), (9922, 20639)]