139640440

素因数分解:

$2^3\times 5^1\times {\mathrm{3491011}}^1$

素因数の和:3491022

約数の個数: 16

約数和(自身を含む): 314191080

約数和(自身を除く): 174550640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3491011, 6982022, 13964044, 17455055, 27928088, 34910110, 69820220, 139640440]

約数ペア:

[(1, 139640440), (2, 69820220), (4, 34910110), (5, 27928088), (8, 17455055), (10, 13964044), (20, 6982022), (40, 3491011)]