204857420

素因数分解:

$2^2\times 5^1\times {\mathrm{10242871}}^1$

素因数の和:10242880

約数の個数: 12

約数和(自身を含む): 430200624

約数和(自身を除く): 225343204

約数列:

[1, 2, 4, 5, 10, 20, 10242871, 20485742, 40971484, 51214355, 102428710, 204857420]

約数ペア:

[(1, 204857420), (2, 102428710), (4, 51214355), (5, 40971484), (10, 20485742), (20, 10242871)]