138850040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{495893}}^1$

素因数の和:495911

約数の個数: 32

約数和(自身を含む): 357043680

約数和(自身を除く): 218193640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 495893, 991786, 1983572, 2479465, 3471251, 3967144, 4958930, 6942502, 9917860, 13885004, 17356255, 19835720, 27770008, 34712510, 69425020, 138850040]

約数ペア:

[(1, 138850040), (2, 69425020), (4, 34712510), (5, 27770008), (7, 19835720), (8, 17356255), (10, 13885004), (14, 9917860), (20, 6942502), (28, 4958930), (35, 3967144), (40, 3471251), (56, 2479465), (70, 1983572), (140, 991786), (280, 495893)]