21814029

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{6263}}^1$

素因数の和:6318

約数の個数: 20

約数和(自身を含む): 33349536

約数和(自身を除く): 11535507

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 6263, 18789, 56367, 169101, 269309, 507303, 807927, 2423781, 7271343, 21814029]

約数ペア:

[(1, 21814029), (3, 7271343), (9, 2423781), (27, 807927), (43, 507303), (81, 269309), (129, 169101), (387, 56367), (1161, 18789), (3483, 6263)]