20447575

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{827}}^1$

素因数の和:903

約数の個数: 24

約数和(自身を含む): 27105408

約数和(自身を除く): 6657833

約数列:

[1, 5, 23, 25, 43, 115, 215, 575, 827, 989, 1075, 4135, 4945, 19021, 20675, 24725, 35561, 95105, 177805, 475525, 817903, 889025, 4089515, 20447575]

約数ペア:

[(1, 20447575), (5, 4089515), (23, 889025), (25, 817903), (43, 475525), (115, 177805), (215, 95105), (575, 35561), (827, 24725), (989, 20675), (1075, 19021), (4135, 4945)]