20391780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{339863}}^1$

素因数の和:339875

約数の個数: 24

約数和(自身を含む): 57097152

約数和(自身を除く): 36705372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 339863, 679726, 1019589, 1359452, 1699315, 2039178, 3398630, 4078356, 5097945, 6797260, 10195890, 20391780]

約数ペア:

[(1, 20391780), (2, 10195890), (3, 6797260), (4, 5097945), (5, 4078356), (6, 3398630), (10, 2039178), (12, 1699315), (15, 1359452), (20, 1019589), (30, 679726), (60, 339863)]