213315640

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{16823}}^1$

素因数の和:17151

約数の個数: 32

約数和(自身を含む): 481502880

約数和(自身を除く): 268187240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 2536, 3170, 6340, 12680, 16823, 33646, 67292, 84115, 134584, 168230, 336460, 672920, 5332891, 10665782, 21331564, 26664455, 42663128, 53328910, 106657820, 213315640]

約数ペア:

[(1, 213315640), (2, 106657820), (4, 53328910), (5, 42663128), (8, 26664455), (10, 21331564), (20, 10665782), (40, 5332891), (317, 672920), (634, 336460), (1268, 168230), (1585, 134584), (2536, 84115), (3170, 67292), (6340, 33646), (12680, 16823)]