20898747

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{647}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 31370976

約数和(自身を除く): 10472229

約数列:

[1, 3, 9, 37, 97, 111, 291, 333, 647, 873, 1941, 3589, 5823, 10767, 23939, 32301, 62759, 71817, 188277, 215451, 564831, 2322083, 6966249, 20898747]

約数ペア:

[(1, 20898747), (3, 6966249), (9, 2322083), (37, 564831), (97, 215451), (111, 188277), (291, 71817), (333, 62759), (647, 32301), (873, 23939), (1941, 10767), (3589, 5823)]