21132040

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7237}}^1$

素因数の和:7321

約数の個数: 32

約数和(自身を含む): 48205080

約数和(自身を除く): 27073040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7237, 14474, 28948, 36185, 57896, 72370, 144740, 289480, 528301, 1056602, 2113204, 2641505, 4226408, 5283010, 10566020, 21132040]

約数ペア:

[(1, 21132040), (2, 10566020), (4, 5283010), (5, 4226408), (8, 2641505), (10, 2113204), (20, 1056602), (40, 528301), (73, 289480), (146, 144740), (292, 72370), (365, 57896), (584, 36185), (730, 28948), (1460, 14474), (2920, 7237)]