21266559

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1447}}^1$

素因数の和:1547

約数の個数: 24

約数和(自身を含む): 32527872

約数和(自身を除く): 11261313

約数列:

[1, 3, 9, 23, 69, 71, 207, 213, 639, 1447, 1633, 4341, 4899, 13023, 14697, 33281, 99843, 102737, 299529, 308211, 924633, 2362951, 7088853, 21266559]

約数ペア:

[(1, 21266559), (3, 7088853), (9, 2362951), (23, 924633), (69, 308211), (71, 299529), (207, 102737), (213, 99843), (639, 33281), (1447, 14697), (1633, 13023), (4341, 4899)]