123458920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1733}}^1$

素因数の和:1894

約数の個数: 64

約数和(自身を含む): 301507920

約数和(自身を除く): 178049000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 137, 260, 274, 520, 548, 685, 1096, 1370, 1733, 1781, 2740, 3466, 3562, 5480, 6932, 7124, 8665, 8905, 13864, 14248, 17330, 17810, 22529, 34660, 35620, 45058, 69320, 71240, 90116, 112645, 180232, 225290, 237421, 450580, 474842, 901160, 949684, 1187105, 1899368, 2374210, 3086473, 4748420, 6172946, 9496840, 12345892, 15432365, 24691784, 30864730, 61729460, 123458920]

約数ペア:

[(1, 123458920), (2, 61729460), (4, 30864730), (5, 24691784), (8, 15432365), (10, 12345892), (13, 9496840), (20, 6172946), (26, 4748420), (40, 3086473), (52, 2374210), (65, 1899368), (104, 1187105), (130, 949684), (137, 901160), (260, 474842), (274, 450580), (520, 237421), (548, 225290), (685, 180232), (1096, 112645), (1370, 90116), (1733, 71240), (1781, 69320), (2740, 45058), (3466, 35620), (3562, 34660), (5480, 22529), (6932, 17810), (7124, 17330), (8665, 14248), (8905, 13864)]