78788620

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{9923}}^1$

素因数の和:10329

約数の個数: 24

約数和(自身を含む): 165889584

約数和(自身を除く): 87100964

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 9923, 19846, 39692, 49615, 99230, 198460, 3939431, 7878862, 15757724, 19697155, 39394310, 78788620]

約数ペア:

[(1, 78788620), (2, 39394310), (4, 19697155), (5, 15757724), (10, 7878862), (20, 3939431), (397, 198460), (794, 99230), (1588, 49615), (1985, 39692), (3970, 19846), (7940, 9923)]