81317719

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 101154816

約数和(自身を除く): 19837097

約数列:

[1, 7, 23, 41, 97, 127, 161, 287, 679, 889, 943, 2231, 2921, 3977, 5207, 6601, 12319, 15617, 20447, 27839, 36449, 86233, 91471, 119761, 283337, 505079, 640297, 838327, 1983359, 3535553, 11616817, 81317719]

約数ペア:

[(1, 81317719), (7, 11616817), (23, 3535553), (41, 1983359), (97, 838327), (127, 640297), (161, 505079), (287, 283337), (679, 119761), (889, 91471), (943, 86233), (2231, 36449), (2921, 27839), (3977, 20447), (5207, 15617), (6601, 12319)]