4080100

素因数分解:

$2^2\times 5^2\times {\mathrm{40801}}^1$

素因数の和:40815

約数の個数: 18

約数和(自身を含む): 8854034

約数和(自身を除く): 4773934

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 40801, 81602, 163204, 204005, 408010, 816020, 1020025, 2040050, 4080100]

約数ペア:

[(1, 4080100), (2, 2040050), (4, 1020025), (5, 816020), (10, 408010), (20, 204005), (25, 163204), (50, 81602), (100, 40801)]