21661612

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18869}}^1$

素因数の和:18921

約数の個数: 24

約数和(自身を含む): 44382240

約数和(自身を除く): 22720628

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18869, 37738, 75476, 132083, 264166, 528332, 773629, 1547258, 3094516, 5415403, 10830806, 21661612]

約数ペア:

[(1, 21661612), (2, 10830806), (4, 5415403), (7, 3094516), (14, 1547258), (28, 773629), (41, 528332), (82, 264166), (164, 132083), (287, 75476), (574, 37738), (1148, 18869)]