51640855

素因数分解:

$5^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{1609}}^1$

素因数の和:1759

約数の個数: 24

約数和(自身を含む): 72681840

約数和(自身を除く): 21040985

約数列:

[1, 5, 7, 35, 49, 131, 245, 655, 917, 1609, 4585, 6419, 8045, 11263, 32095, 56315, 78841, 210779, 394205, 1053895, 1475453, 7377265, 10328171, 51640855]

約数ペア:

[(1, 51640855), (5, 10328171), (7, 7377265), (35, 1475453), (49, 1053895), (131, 394205), (245, 210779), (655, 78841), (917, 56315), (1609, 32095), (4585, 11263), (6419, 8045)]