81488709

素因数分解:

$3^2\times {\mathrm{173}}^1\times {\mathrm{199}}^1\times {\mathrm{263}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 119433600

約数和(自身を除く): 37944891

約数列:

[1, 3, 9, 173, 199, 263, 519, 597, 789, 1557, 1791, 2367, 34427, 45499, 52337, 103281, 136497, 157011, 309843, 409491, 471033, 9054301, 27162903, 81488709]

約数ペア:

[(1, 81488709), (3, 27162903), (9, 9054301), (173, 471033), (199, 409491), (263, 309843), (519, 157011), (597, 136497), (789, 103281), (1557, 52337), (1791, 45499), (2367, 34427)]