20802891

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 30791680

約数和(自身を除く): 9988789

約数列:

[1, 3, 19, 31, 57, 61, 93, 183, 193, 579, 589, 1159, 1767, 1891, 3477, 3667, 5673, 5983, 11001, 11773, 17949, 35319, 35929, 107787, 113677, 223687, 341031, 364963, 671061, 1094889, 6934297, 20802891]

約数ペア:

[(1, 20802891), (3, 6934297), (19, 1094889), (31, 671061), (57, 364963), (61, 341031), (93, 223687), (183, 113677), (193, 107787), (579, 35929), (589, 35319), (1159, 17949), (1767, 11773), (1891, 11001), (3477, 5983), (3667, 5673)]