21578669

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{467}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 26889408

約数和(自身を除く): 5310739

約数列:

[1, 7, 23, 41, 49, 161, 287, 467, 943, 1127, 2009, 3269, 6601, 10741, 19147, 22883, 46207, 75187, 134029, 440381, 526309, 938203, 3082667, 21578669]

約数ペア:

[(1, 21578669), (7, 3082667), (23, 938203), (41, 526309), (49, 440381), (161, 134029), (287, 75187), (467, 46207), (943, 22883), (1127, 19147), (2009, 10741), (3269, 6601)]