21657692

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9791}}^1$

素因数の和:9881

約数の個数: 24

約数和(自身を含む): 43868160

約数和(自身を除く): 22210468

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9791, 19582, 39164, 68537, 137074, 274148, 773489, 1546978, 3093956, 5414423, 10828846, 21657692]

約数ペア:

[(1, 21657692), (2, 10828846), (4, 5414423), (7, 3093956), (14, 1546978), (28, 773489), (79, 274148), (158, 137074), (316, 68537), (553, 39164), (1106, 19582), (2212, 9791)]