1398663

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^2$

素因数の和:311

約数の個数: 18

約数和(自身を含む): 2324504

約数和(自身を除く): 925841

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 3129, 9387, 22201, 66603, 155407, 199809, 466221, 1398663]

約数ペア:

[(1, 1398663), (3, 466221), (7, 199809), (9, 155407), (21, 66603), (63, 22201), (149, 9387), (447, 3129), (1043, 1341)]