20409993

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2293}}^1$

素因数の和:2365

約数の個数: 24

約数和(自身を含む): 31492032

約数和(自身を除く): 11082039

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2293, 2967, 6879, 8901, 20637, 52739, 98599, 158217, 295797, 474651, 887391, 2267777, 6803331, 20409993]

約数ペア:

[(1, 20409993), (3, 6803331), (9, 2267777), (23, 887391), (43, 474651), (69, 295797), (129, 158217), (207, 98599), (387, 52739), (989, 20637), (2293, 8901), (2967, 6879)]