31305800

素因数分解:

$2^3\times 5^2\times {\mathrm{157}}^1\times {\mathrm{997}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 73323060

約数和(自身を除く): 42017260

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 157, 200, 314, 628, 785, 997, 1256, 1570, 1994, 3140, 3925, 3988, 4985, 6280, 7850, 7976, 9970, 15700, 19940, 24925, 31400, 39880, 49850, 99700, 156529, 199400, 313058, 626116, 782645, 1252232, 1565290, 3130580, 3913225, 6261160, 7826450, 15652900, 31305800]

約数ペア:

[(1, 31305800), (2, 15652900), (4, 7826450), (5, 6261160), (8, 3913225), (10, 3130580), (20, 1565290), (25, 1252232), (40, 782645), (50, 626116), (100, 313058), (157, 199400), (200, 156529), (314, 99700), (628, 49850), (785, 39880), (997, 31400), (1256, 24925), (1570, 19940), (1994, 15700), (3140, 9970), (3925, 7976), (3988, 7850), (4985, 6280)]