21997550

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5569}}^1$

素因数の和:5660

約数の個数: 24

約数和(自身を含む): 41440800

約数和(自身を除く): 19443250

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950, 5569, 11138, 27845, 55690, 139225, 278450, 439951, 879902, 2199755, 4399510, 10998775, 21997550]

約数ペア:

[(1, 21997550), (2, 10998775), (5, 4399510), (10, 2199755), (25, 879902), (50, 439951), (79, 278450), (158, 139225), (395, 55690), (790, 27845), (1975, 11138), (3950, 5569)]