18416020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131543}}^1$

素因数の和:131559

約数の個数: 24

約数和(自身を含む): 44198784

約数和(自身を除く): 25782764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 131543, 263086, 526172, 657715, 920801, 1315430, 1841602, 2630860, 3683204, 4604005, 9208010, 18416020]

約数ペア:

[(1, 18416020), (2, 9208010), (4, 4604005), (5, 3683204), (7, 2630860), (10, 1841602), (14, 1315430), (20, 920801), (28, 657715), (35, 526172), (70, 263086), (140, 131543)]