221493181

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{463}}^1\times {\mathrm{751}}^1$

素因数の和:1241

約数の個数: 24

約数和(自身を含む): 278444544

約数和(自身を除く): 56951363

約数列:

[1, 7, 13, 49, 91, 463, 637, 751, 3241, 5257, 6019, 9763, 22687, 36799, 42133, 68341, 294931, 347713, 478387, 2433991, 4520269, 17037937, 31641883, 221493181]

約数ペア:

[(1, 221493181), (7, 31641883), (13, 17037937), (49, 4520269), (91, 2433991), (463, 478387), (637, 347713), (751, 294931), (3241, 68341), (5257, 42133), (6019, 36799), (9763, 22687)]