201661520

素因数分解:

$2^4\times 5^1\times {\mathrm{2520769}}^1$

素因数の和:2520782

約数の個数: 20

約数和(自身を含む): 468863220

約数和(自身を除く): 267201700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2520769, 5041538, 10083076, 12603845, 20166152, 25207690, 40332304, 50415380, 100830760, 201661520]

約数ペア:

[(1, 201661520), (2, 100830760), (4, 50415380), (5, 40332304), (8, 25207690), (10, 20166152), (16, 12603845), (20, 10083076), (40, 5041538), (80, 2520769)]