27978195

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 53738496

約数和(自身を除く): 25760301

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 67, 97, 105, 123, 201, 205, 287, 291, 335, 469, 485, 615, 679, 861, 1005, 1407, 1435, 1455, 2037, 2345, 2747, 3395, 3977, 4305, 6499, 7035, 8241, 10185, 11931, 13735, 19229, 19497, 19885, 27839, 32495, 41205, 45493, 57687, 59655, 83517, 96145, 97485, 136479, 139195, 227465, 266459, 288435, 417585, 682395, 799377, 1332295, 1865213, 3996885, 5595639, 9326065, 27978195]

約数ペア:

[(1, 27978195), (3, 9326065), (5, 5595639), (7, 3996885), (15, 1865213), (21, 1332295), (35, 799377), (41, 682395), (67, 417585), (97, 288435), (105, 266459), (123, 227465), (201, 139195), (205, 136479), (287, 97485), (291, 96145), (335, 83517), (469, 59655), (485, 57687), (615, 45493), (679, 41205), (861, 32495), (1005, 27839), (1407, 19885), (1435, 19497), (1455, 19229), (2037, 13735), (2345, 11931), (2747, 10185), (3395, 8241), (3977, 7035), (4305, 6499)]