19909239

素因数分解:

$3^1\times 7^2\times {\mathrm{167}}^1\times {\mathrm{811}}^1$

素因数の和:995

約数の個数: 24

約数和(自身を含む): 31102848

約数和(自身を除く): 11193609

約数列:

[1, 3, 7, 21, 49, 147, 167, 501, 811, 1169, 2433, 3507, 5677, 8183, 17031, 24549, 39739, 119217, 135437, 406311, 948059, 2844177, 6636413, 19909239]

約数ペア:

[(1, 19909239), (3, 6636413), (7, 2844177), (21, 948059), (49, 406311), (147, 135437), (167, 119217), (501, 39739), (811, 24549), (1169, 17031), (2433, 8183), (3507, 5677)]