20979657

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2357}}^1$

素因数の和:2429

約数の個数: 24

約数和(自身を含む): 32370624

約数和(自身を除く): 11390967

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2357, 2967, 7071, 8901, 21213, 54211, 101351, 162633, 304053, 487899, 912159, 2331073, 6993219, 20979657]

約数ペア:

[(1, 20979657), (3, 6993219), (9, 2331073), (23, 912159), (43, 487899), (69, 304053), (129, 162633), (207, 101351), (387, 54211), (989, 21213), (2357, 8901), (2967, 7071)]