21088850

素因数分解:

$2^1\times 5^2\times {\mathrm{197}}^1\times {\mathrm{2141}}^1$

素因数の和:2350

約数の個数: 24

約数和(自身を含む): 39442788

約数和(自身を除く): 18353938

約数列:

[1, 2, 5, 10, 25, 50, 197, 394, 985, 1970, 2141, 4282, 4925, 9850, 10705, 21410, 53525, 107050, 421777, 843554, 2108885, 4217770, 10544425, 21088850]

約数ペア:

[(1, 21088850), (2, 10544425), (5, 4217770), (10, 2108885), (25, 843554), (50, 421777), (197, 107050), (394, 53525), (985, 21410), (1970, 10705), (2141, 9850), (4282, 4925)]