21723039

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 34944000

約数和(自身を除く): 13220961

約数列:

[1, 3, 9, 13, 27, 39, 117, 199, 311, 351, 597, 933, 1791, 2587, 2799, 4043, 5373, 7761, 8397, 12129, 23283, 36387, 61889, 69849, 109161, 185667, 557001, 804557, 1671003, 2413671, 7241013, 21723039]

約数ペア:

[(1, 21723039), (3, 7241013), (9, 2413671), (13, 1671003), (27, 804557), (39, 557001), (117, 185667), (199, 109161), (311, 69849), (351, 61889), (597, 36387), (933, 23283), (1791, 12129), (2587, 8397), (2799, 7761), (4043, 5373)]