21947913

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1721}}^1$

素因数の和:1849

約数の個数: 24

約数和(自身を含む): 34474440

約数和(自身を除く): 12526527

約数列:

[1, 3, 9, 13, 39, 109, 117, 327, 981, 1417, 1721, 4251, 5163, 12753, 15489, 22373, 67119, 187589, 201357, 562767, 1688301, 2438657, 7315971, 21947913]

約数ペア:

[(1, 21947913), (3, 7315971), (9, 2438657), (13, 1688301), (39, 562767), (109, 201357), (117, 187589), (327, 67119), (981, 22373), (1417, 15489), (1721, 12753), (4251, 5163)]