20842263

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:296

約数の個数: 36

約数和(自身を含む): 33229872

約数和(自身を除く): 12387609

約数列:

[1, 3, 9, 13, 39, 71, 117, 169, 193, 213, 507, 579, 639, 923, 1521, 1737, 2509, 2769, 7527, 8307, 11999, 13703, 22581, 32617, 35997, 41109, 97851, 107991, 123327, 178139, 293553, 534417, 1603251, 2315807, 6947421, 20842263]

約数ペア:

[(1, 20842263), (3, 6947421), (9, 2315807), (13, 1603251), (39, 534417), (71, 293553), (117, 178139), (169, 123327), (193, 107991), (213, 97851), (507, 41109), (579, 35997), (639, 32617), (923, 22581), (1521, 13703), (1737, 11999), (2509, 8307), (2769, 7527)]