638687049

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{212683}}^1$

素因数の和:212717

約数の個数: 32

約数和(自身を含む): 1143389184

約数和(自身を除く): 504702135

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 212683, 638049, 1488781, 2339513, 2764879, 4466343, 7018539, 8294637, 16376591, 19354153, 30413669, 49129773, 58062459, 91241007, 212895683, 638687049]

約数ペア:

[(1, 638687049), (3, 212895683), (7, 91241007), (11, 58062459), (13, 49129773), (21, 30413669), (33, 19354153), (39, 16376591), (77, 8294637), (91, 7018539), (143, 4466343), (231, 2764879), (273, 2339513), (429, 1488781), (1001, 638049), (3003, 212683)]