15385820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2131}}^1$

素因数の和:2178

約数の個数: 36

約数和(自身を含む): 34116264

約数和(自身を除く): 18730444

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2131, 3610, 4262, 7220, 8524, 10655, 21310, 40489, 42620, 80978, 161956, 202445, 404890, 769291, 809780, 1538582, 3077164, 3846455, 7692910, 15385820]

約数ペア:

[(1, 15385820), (2, 7692910), (4, 3846455), (5, 3077164), (10, 1538582), (19, 809780), (20, 769291), (38, 404890), (76, 202445), (95, 161956), (190, 80978), (361, 42620), (380, 40489), (722, 21310), (1444, 10655), (1805, 8524), (2131, 7220), (3610, 4262)]