15628221

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{641}}^1$

素因数の和:703

約数の個数: 40

約数和(自身を含む): 27344064

約数和(自身を除く): 11715843

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 641, 903, 1161, 1923, 2709, 3483, 4487, 5769, 8127, 13461, 17307, 24381, 27563, 40383, 51921, 82689, 121149, 192941, 248067, 363447, 578823, 744201, 1736469, 2232603, 5209407, 15628221]

約数ペア:

[(1, 15628221), (3, 5209407), (7, 2232603), (9, 1736469), (21, 744201), (27, 578823), (43, 363447), (63, 248067), (81, 192941), (129, 121149), (189, 82689), (301, 51921), (387, 40383), (567, 27563), (641, 24381), (903, 17307), (1161, 13461), (1923, 8127), (2709, 5769), (3483, 4487)]