18406340

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3581}}^1$

素因数の和:3847

約数の個数: 24

約数和(自身を含む): 38814552

約数和(自身を除く): 20408212

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 3581, 5140, 7162, 14324, 17905, 35810, 71620, 920317, 1840634, 3681268, 4601585, 9203170, 18406340]

約数ペア:

[(1, 18406340), (2, 9203170), (4, 4601585), (5, 3681268), (10, 1840634), (20, 920317), (257, 71620), (514, 35810), (1028, 17905), (1285, 14324), (2570, 7162), (3581, 5140)]