20159660

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2539}}^1$

素因数の和:2945

約数の個数: 24

約数和(自身を含む): 42458640

約数和(自身を除く): 22298980

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2539, 3970, 5078, 7940, 10156, 12695, 25390, 50780, 1007983, 2015966, 4031932, 5039915, 10079830, 20159660]

約数ペア:

[(1, 20159660), (2, 10079830), (4, 5039915), (5, 4031932), (10, 2015966), (20, 1007983), (397, 50780), (794, 25390), (1588, 12695), (1985, 10156), (2539, 7940), (3970, 5078)]