81042590

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{499}}^1$

素因数の和:764

約数の個数: 32

約数和(自身を含む): 148500000

約数和(自身を除く): 67457410

約数列:

[1, 2, 5, 10, 109, 149, 218, 298, 499, 545, 745, 998, 1090, 1490, 2495, 4990, 16241, 32482, 54391, 74351, 81205, 108782, 148702, 162410, 271955, 371755, 543910, 743510, 8104259, 16208518, 40521295, 81042590]

約数ペア:

[(1, 81042590), (2, 40521295), (5, 16208518), (10, 8104259), (109, 743510), (149, 543910), (218, 371755), (298, 271955), (499, 162410), (545, 148702), (745, 108782), (998, 81205), (1090, 74351), (1490, 54391), (2495, 32482), (4990, 16241)]