18166520

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1451}}^1$

素因数の和:1775

約数の個数: 32

約数和(自身を含む): 41033520

約数和(自身を除く): 22867000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1451, 1565, 2504, 2902, 3130, 5804, 6260, 7255, 11608, 12520, 14510, 29020, 58040, 454163, 908326, 1816652, 2270815, 3633304, 4541630, 9083260, 18166520]

約数ペア:

[(1, 18166520), (2, 9083260), (4, 4541630), (5, 3633304), (8, 2270815), (10, 1816652), (20, 908326), (40, 454163), (313, 58040), (626, 29020), (1252, 14510), (1451, 12520), (1565, 11608), (2504, 7255), (2902, 6260), (3130, 5804)]