51286640

素因数分解:

$2^4\times 5^1\times {\mathrm{641083}}^1$

素因数の和:641096

約数の個数: 20

約数和(自身を含む): 119241624

約数和(自身を除く): 67954984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641083, 1282166, 2564332, 3205415, 5128664, 6410830, 10257328, 12821660, 25643320, 51286640]

約数ペア:

[(1, 51286640), (2, 25643320), (4, 12821660), (5, 10257328), (8, 6410830), (10, 5128664), (16, 3205415), (20, 2564332), (40, 1282166), (80, 641083)]