20408873177

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{397}}^1\times {\mathrm{3389}}^1$

素因数の和:4001

約数の個数: 32

約数和(自身を含む): 25645973760

約数和(自身を除く): 5237100583

約数列:

[1, 7, 11, 77, 197, 397, 1379, 2167, 2779, 3389, 4367, 15169, 23723, 30569, 37279, 78209, 260953, 547463, 667633, 860299, 1345433, 4673431, 6022093, 7343963, 9418031, 14799763, 51407741, 103598341, 265050301, 1855352107, 2915553311, 20408873177]

約数ペア:

[(1, 20408873177), (7, 2915553311), (11, 1855352107), (77, 265050301), (197, 103598341), (397, 51407741), (1379, 14799763), (2167, 9418031), (2779, 7343963), (3389, 6022093), (4367, 4673431), (15169, 1345433), (23723, 860299), (30569, 667633), (37279, 547463), (78209, 260953)]