21850

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:54

約数の個数: 24

約数和(自身を含む): 44640

約数和(自身を除く): 22790

約数列:

[1, 2, 5, 10, 19, 23, 25, 38, 46, 50, 95, 115, 190, 230, 437, 475, 575, 874, 950, 1150, 2185, 4370, 10925, 21850]

約数ペア:

[(1, 21850), (2, 10925), (5, 4370), (10, 2185), (19, 1150), (23, 950), (25, 874), (38, 575), (46, 475), (50, 437), (95, 230), (115, 190)]