2781909

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:122

約数の個数: 36

約数和(自身を含む): 4567680

約数和(自身を除く): 1785771

約数列:

[1, 3, 9, 13, 31, 39, 59, 93, 117, 169, 177, 279, 403, 507, 531, 767, 1209, 1521, 1829, 2301, 3627, 5239, 5487, 6903, 9971, 15717, 16461, 23777, 29913, 47151, 71331, 89739, 213993, 309101, 927303, 2781909]

約数ペア:

[(1, 2781909), (3, 927303), (9, 309101), (13, 213993), (31, 89739), (39, 71331), (59, 47151), (93, 29913), (117, 23777), (169, 16461), (177, 15717), (279, 9971), (403, 6903), (507, 5487), (531, 5239), (767, 3627), (1209, 2301), (1521, 1829)]