7937721

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:262

約数の個数: 36

約数和(自身を含む): 13008996

約数和(自身を除く): 5071275

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 121, 197, 333, 363, 407, 591, 1089, 1221, 1773, 2167, 3663, 4477, 6501, 7289, 13431, 19503, 21867, 23837, 40293, 65601, 71511, 80179, 214533, 240537, 721611, 881969, 2645907, 7937721]

約数ペア:

[(1, 7937721), (3, 2645907), (9, 881969), (11, 721611), (33, 240537), (37, 214533), (99, 80179), (111, 71511), (121, 65601), (197, 40293), (333, 23837), (363, 21867), (407, 19503), (591, 13431), (1089, 7289), (1221, 6501), (1773, 4477), (2167, 3663)]