21263123

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{1549}}^1$

素因数の和:1646

約数の個数: 16

約数和(自身を含む): 25444800

約数和(自身を除く): 4181677

約数列:

[1, 7, 37, 53, 259, 371, 1549, 1961, 10843, 13727, 57313, 82097, 401191, 574679, 3037589, 21263123]

約数ペア:

[(1, 21263123), (7, 3037589), (37, 574679), (53, 401191), (259, 82097), (371, 57313), (1549, 13727), (1961, 10843)]