18511120

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3259}}^1$

素因数の和:3343

約数の個数: 40

約数和(自身を含む): 43657920

約数和(自身を除く): 25146800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3259, 5680, 6518, 13036, 16295, 26072, 32590, 52144, 65180, 130360, 231389, 260720, 462778, 925556, 1156945, 1851112, 2313890, 3702224, 4627780, 9255560, 18511120]

約数ペア:

[(1, 18511120), (2, 9255560), (4, 4627780), (5, 3702224), (8, 2313890), (10, 1851112), (16, 1156945), (20, 925556), (40, 462778), (71, 260720), (80, 231389), (142, 130360), (284, 65180), (355, 52144), (568, 32590), (710, 26072), (1136, 16295), (1420, 13036), (2840, 6518), (3259, 5680)]