788420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:587

約数の個数: 24

約数和(自身を含む): 1680000

約数和(自身を除く): 891580

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 499, 790, 998, 1580, 1996, 2495, 4990, 9980, 39421, 78842, 157684, 197105, 394210, 788420]

約数ペア:

[(1, 788420), (2, 394210), (4, 197105), (5, 157684), (10, 78842), (20, 39421), (79, 9980), (158, 4990), (316, 2495), (395, 1996), (499, 1580), (790, 998)]