128437911

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{647}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 223202304

約数和(自身を除く): 94764393

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 137, 161, 207, 411, 483, 647, 959, 1233, 1449, 1941, 2877, 3151, 4529, 5823, 8631, 9453, 13587, 14881, 22057, 28359, 40761, 44643, 66171, 88639, 104167, 133929, 198513, 265917, 312501, 620473, 797751, 937503, 1861419, 2038697, 5584257, 6116091, 14270879, 18348273, 42812637, 128437911]

約数ペア:

[(1, 128437911), (3, 42812637), (7, 18348273), (9, 14270879), (21, 6116091), (23, 5584257), (63, 2038697), (69, 1861419), (137, 937503), (161, 797751), (207, 620473), (411, 312501), (483, 265917), (647, 198513), (959, 133929), (1233, 104167), (1449, 88639), (1941, 66171), (2877, 44643), (3151, 40761), (4529, 28359), (5823, 22057), (8631, 14881), (9453, 13587)]