25904809

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 33013760

約数和(自身を除く): 7108951

約数列:

[1, 7, 19, 31, 61, 103, 133, 217, 427, 589, 721, 1159, 1891, 1957, 3193, 4123, 6283, 8113, 13237, 13699, 22351, 35929, 43981, 60667, 119377, 194773, 251503, 424669, 835639, 1363411, 3700687, 25904809]

約数ペア:

[(1, 25904809), (7, 3700687), (19, 1363411), (31, 835639), (61, 424669), (103, 251503), (133, 194773), (217, 119377), (427, 60667), (589, 43981), (721, 35929), (1159, 22351), (1891, 13699), (1957, 13237), (3193, 8113), (4123, 6283)]