309380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 672000

約数和(自身を除く): 362620

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 499, 620, 998, 1996, 2495, 4990, 9980, 15469, 30938, 61876, 77345, 154690, 309380]

約数ペア:

[(1, 309380), (2, 154690), (4, 77345), (5, 61876), (10, 30938), (20, 15469), (31, 9980), (62, 4990), (124, 2495), (155, 1996), (310, 998), (499, 620)]