21133520

素因数分解:

$2^4\times 5^1\times {\mathrm{264169}}^1$

素因数の和:264182

約数の個数: 20

約数和(自身を含む): 49135620

約数和(自身を除く): 28002100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 264169, 528338, 1056676, 1320845, 2113352, 2641690, 4226704, 5283380, 10566760, 21133520]

約数ペア:

[(1, 21133520), (2, 10566760), (4, 5283380), (5, 4226704), (8, 2641690), (10, 2113352), (16, 1320845), (20, 1056676), (40, 528338), (80, 264169)]