138880760

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{9161}}^1$

素因数の和:9551

約数の個数: 32

約数和(自身を含む): 313340400

約数和(自身を除く): 174459640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1516, 1895, 3032, 3790, 7580, 9161, 15160, 18322, 36644, 45805, 73288, 91610, 183220, 366440, 3472019, 6944038, 13888076, 17360095, 27776152, 34720190, 69440380, 138880760]

約数ペア:

[(1, 138880760), (2, 69440380), (4, 34720190), (5, 27776152), (8, 17360095), (10, 13888076), (20, 6944038), (40, 3472019), (379, 366440), (758, 183220), (1516, 91610), (1895, 73288), (3032, 45805), (3790, 36644), (7580, 18322), (9161, 15160)]