20392990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49739}}^1$

素因数の和:49787

約数の個数: 16

約数和(自身を含む): 37603440

約数和(自身を除く): 17210450

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 49739, 99478, 248695, 497390, 2039299, 4078598, 10196495, 20392990]

約数ペア:

[(1, 20392990), (2, 10196495), (5, 4078598), (10, 2039299), (41, 497390), (82, 248695), (205, 99478), (410, 49739)]