18017020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{128693}}^1$

素因数の和:128709

約数の個数: 24

約数和(自身を含む): 43241184

約数和(自身を除く): 25224164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 128693, 257386, 514772, 643465, 900851, 1286930, 1801702, 2573860, 3603404, 4504255, 9008510, 18017020]

約数ペア:

[(1, 18017020), (2, 9008510), (4, 4504255), (5, 3603404), (7, 2573860), (10, 1801702), (14, 1286930), (20, 900851), (28, 643465), (35, 514772), (70, 257386), (140, 128693)]