81717519

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{263}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 122056704

約数和(自身を除く): 40339185

約数列:

[1, 3, 13, 31, 39, 93, 257, 263, 403, 771, 789, 1209, 3341, 3419, 7967, 8153, 10023, 10257, 23901, 24459, 67591, 103571, 105989, 202773, 310713, 317967, 878683, 2095321, 2636049, 6285963, 27239173, 81717519]

約数ペア:

[(1, 81717519), (3, 27239173), (13, 6285963), (31, 2636049), (39, 2095321), (93, 878683), (257, 317967), (263, 310713), (403, 202773), (771, 105989), (789, 103571), (1209, 67591), (3341, 24459), (3419, 23901), (7967, 10257), (8153, 10023)]