3998860

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1117}}^1$

素因数の和:1305

約数の個数: 24

約数和(自身を含む): 8452080

約数和(自身を除く): 4453220

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1117, 1790, 2234, 3580, 4468, 5585, 11170, 22340, 199943, 399886, 799772, 999715, 1999430, 3998860]

約数ペア:

[(1, 3998860), (2, 1999430), (4, 999715), (5, 799772), (10, 399886), (20, 199943), (179, 22340), (358, 11170), (716, 5585), (895, 4468), (1117, 3580), (1790, 2234)]