20123802881

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{881}}^1\times {\mathrm{2437}}^1$

素因数の和:3441

約数の個数: 32

約数和(自身を含む): 25046880768

約数和(自身を除く): 4923077887

約数列:

[1, 7, 13, 91, 103, 721, 881, 1339, 2437, 6167, 9373, 11453, 17059, 31681, 80171, 90743, 221767, 251011, 635201, 1179659, 1757077, 2146997, 3263143, 8257613, 15028979, 22842001, 27910961, 195376727, 221140691, 1547984837, 2874828983, 20123802881]

約数ペア:

[(1, 20123802881), (7, 2874828983), (13, 1547984837), (91, 221140691), (103, 195376727), (721, 27910961), (881, 22842001), (1339, 15028979), (2437, 8257613), (6167, 3263143), (9373, 2146997), (11453, 1757077), (17059, 1179659), (31681, 635201), (80171, 251011), (90743, 221767)]