201420821

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{313}}^1\times {\mathrm{571}}^1$

素因数の和:921

約数の個数: 24

約数和(自身を含む): 245703744

約数和(自身を除く): 44282923

約数列:

[1, 7, 23, 49, 161, 313, 571, 1127, 2191, 3997, 7199, 13133, 15337, 27979, 50393, 91931, 178723, 352751, 643517, 1251061, 4110629, 8757427, 28774403, 201420821]

約数ペア:

[(1, 201420821), (7, 28774403), (23, 8757427), (49, 4110629), (161, 1251061), (313, 643517), (571, 352751), (1127, 178723), (2191, 91931), (3997, 50393), (7199, 27979), (13133, 15337)]