81315495

素因数分解:

$3^4\times 5^1\times {\mathrm{200779}}^1$

素因数の和:200796

約数の個数: 20

約数和(自身を含む): 145766280

約数和(自身を除く): 64450785

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 200779, 602337, 1003895, 1807011, 3011685, 5421033, 9035055, 16263099, 27105165, 81315495]

約数ペア:

[(1, 81315495), (3, 27105165), (5, 16263099), (9, 9035055), (15, 5421033), (27, 3011685), (45, 1807011), (81, 1003895), (135, 602337), (405, 200779)]