21392199

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{167}}^1\times {\mathrm{331}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 31903872

約数和(自身を除く): 10511673

約数列:

[1, 3, 9, 43, 129, 167, 331, 387, 501, 993, 1503, 2979, 7181, 14233, 21543, 42699, 55277, 64629, 128097, 165831, 497493, 2376911, 7130733, 21392199]

約数ペア:

[(1, 21392199), (3, 7130733), (9, 2376911), (43, 497493), (129, 165831), (167, 128097), (331, 64629), (387, 55277), (501, 42699), (993, 21543), (1503, 14233), (2979, 7181)]