1131221

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:452

約数の個数: 16

約数和(自身を含む): 1440768

約数和(自身を除く): 309547

約数列:

[1, 7, 13, 31, 91, 217, 401, 403, 2807, 2821, 5213, 12431, 36491, 87017, 161603, 1131221]

約数ペア:

[(1, 1131221), (7, 161603), (13, 87017), (31, 36491), (91, 12431), (217, 5213), (401, 2821), (403, 2807)]