17724987

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{727}}^1$

素因数の和:789

約数の個数: 40

約数和(自身を含む): 31006976

約数和(自身を除く): 13281989

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 727, 903, 1161, 2181, 2709, 3483, 5089, 6543, 8127, 15267, 19629, 24381, 31261, 45801, 58887, 93783, 137403, 218827, 281349, 412209, 656481, 844047, 1969443, 2532141, 5908329, 17724987]

約数ペア:

[(1, 17724987), (3, 5908329), (7, 2532141), (9, 1969443), (21, 844047), (27, 656481), (43, 412209), (63, 281349), (81, 218827), (129, 137403), (189, 93783), (301, 58887), (387, 45801), (567, 31261), (727, 24381), (903, 19629), (1161, 15267), (2181, 8127), (2709, 6543), (3483, 5089)]