30781023

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{823}}^1$

素因数の和:983

約数の個数: 32

約数和(自身を含む): 50942976

約数和(自身を除く): 20161953

約数列:

[1, 3, 7, 13, 21, 39, 91, 137, 273, 411, 823, 959, 1781, 2469, 2877, 5343, 5761, 10699, 12467, 17283, 32097, 37401, 74893, 112751, 224679, 338253, 789257, 1465763, 2367771, 4397289, 10260341, 30781023]

約数ペア:

[(1, 30781023), (3, 10260341), (7, 4397289), (13, 2367771), (21, 1465763), (39, 789257), (91, 338253), (137, 224679), (273, 112751), (411, 74893), (823, 37401), (959, 32097), (1781, 17283), (2469, 12467), (2877, 10699), (5343, 5761)]