21757887

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{223}}^1\times {\mathrm{293}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 32532864

約数和(自身を除く): 10774977

約数列:

[1, 3, 9, 37, 111, 223, 293, 333, 669, 879, 2007, 2637, 8251, 10841, 24753, 32523, 65339, 74259, 97569, 196017, 588051, 2417543, 7252629, 21757887]

約数ペア:

[(1, 21757887), (3, 7252629), (9, 2417543), (37, 588051), (111, 196017), (223, 97569), (293, 74259), (333, 65339), (669, 32523), (879, 24753), (2007, 10841), (2637, 8251)]