81519520

素因数分解:

$2^5\times 5^1\times {\mathrm{467}}^1\times {\mathrm{1091}}^1$

素因数の和:1573

約数の個数: 48

約数和(自身を含む): 193179168

約数和(自身を除く): 111659648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 467, 934, 1091, 1868, 2182, 2335, 3736, 4364, 4670, 5455, 7472, 8728, 9340, 10910, 14944, 17456, 18680, 21820, 34912, 37360, 43640, 74720, 87280, 174560, 509497, 1018994, 2037988, 2547485, 4075976, 5094970, 8151952, 10189940, 16303904, 20379880, 40759760, 81519520]

約数ペア:

[(1, 81519520), (2, 40759760), (4, 20379880), (5, 16303904), (8, 10189940), (10, 8151952), (16, 5094970), (20, 4075976), (32, 2547485), (40, 2037988), (80, 1018994), (160, 509497), (467, 174560), (934, 87280), (1091, 74720), (1868, 43640), (2182, 37360), (2335, 34912), (3736, 21820), (4364, 18680), (4670, 17456), (5455, 14944), (7472, 10910), (8728, 9340)]