28780569

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:322

約数の個数: 32

約数和(自身を含む): 43929600

約数和(自身を除く): 15149031

約数列:

[1, 3, 9, 27, 79, 103, 131, 237, 309, 393, 711, 927, 1179, 2133, 2781, 3537, 8137, 10349, 13493, 24411, 31047, 40479, 73233, 93141, 121437, 219699, 279423, 364311, 1065947, 3197841, 9593523, 28780569]

約数ペア:

[(1, 28780569), (3, 9593523), (9, 3197841), (27, 1065947), (79, 364311), (103, 279423), (131, 219699), (237, 121437), (309, 93141), (393, 73233), (711, 40479), (927, 31047), (1179, 24411), (2133, 13493), (2781, 10349), (3537, 8137)]