81962321

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 103203072

約数和(自身を除く): 21240751

約数列:

[1, 7, 17, 41, 107, 119, 157, 287, 697, 749, 1099, 1819, 2669, 4387, 4879, 6437, 12733, 16799, 18683, 30709, 45059, 74579, 109429, 117593, 285583, 522053, 688759, 766003, 1999081, 4821313, 11708903, 81962321]

約数ペア:

[(1, 81962321), (7, 11708903), (17, 4821313), (41, 1999081), (107, 766003), (119, 688759), (157, 522053), (287, 285583), (697, 117593), (749, 109429), (1099, 74579), (1819, 45059), (2669, 30709), (4387, 18683), (4879, 16799), (6437, 12733)]