18967420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{23131}}^1$

素因数の和:23181

約数の個数: 24

約数和(自身を含む): 40804848

約数和(自身を除く): 21837428

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 23131, 46262, 92524, 115655, 231310, 462620, 948371, 1896742, 3793484, 4741855, 9483710, 18967420]

約数ペア:

[(1, 18967420), (2, 9483710), (4, 4741855), (5, 3793484), (10, 1896742), (20, 948371), (41, 462620), (82, 231310), (164, 115655), (205, 92524), (410, 46262), (820, 23131)]