81348215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{331}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 111552000

約数和(自身を除く): 30203785

約数列:

[1, 5, 13, 19, 65, 95, 199, 247, 331, 995, 1235, 1655, 2587, 3781, 4303, 6289, 12935, 18905, 21515, 31445, 49153, 65869, 81757, 245765, 329345, 408785, 856297, 1251511, 4281485, 6257555, 16269643, 81348215]

約数ペア:

[(1, 81348215), (5, 16269643), (13, 6257555), (19, 4281485), (65, 1251511), (95, 856297), (199, 408785), (247, 329345), (331, 245765), (995, 81757), (1235, 65869), (1655, 49153), (2587, 31445), (3781, 21515), (4303, 18905), (6289, 12935)]