18995140

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4259}}^1$

素因数の和:4491

約数の個数: 24

約数和(自身を含む): 40078080

約数和(自身を除く): 21082940

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4259, 4460, 8518, 17036, 21295, 42590, 85180, 949757, 1899514, 3799028, 4748785, 9497570, 18995140]

約数ペア:

[(1, 18995140), (2, 9497570), (4, 4748785), (5, 3799028), (10, 1899514), (20, 949757), (223, 85180), (446, 42590), (892, 21295), (1115, 17036), (2230, 8518), (4259, 4460)]