21325923

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 34944000

約数和(自身を除く): 13618077

約数列:

[1, 3, 9, 19, 27, 31, 57, 81, 93, 149, 171, 243, 279, 447, 513, 589, 837, 1341, 1539, 1767, 2511, 2831, 4023, 4617, 4619, 5301, 7533, 8493, 12069, 13857, 15903, 25479, 36207, 41571, 47709, 76437, 87761, 124713, 143127, 229311, 263283, 374139, 687933, 789849, 1122417, 2369547, 7108641, 21325923]

約数ペア:

[(1, 21325923), (3, 7108641), (9, 2369547), (19, 1122417), (27, 789849), (31, 687933), (57, 374139), (81, 263283), (93, 229311), (149, 143127), (171, 124713), (243, 87761), (279, 76437), (447, 47709), (513, 41571), (589, 36207), (837, 25479), (1341, 15903), (1539, 13857), (1767, 12069), (2511, 8493), (2831, 7533), (4023, 5301), (4617, 4619)]