20690228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{3863}}^1$

素因数の和:3983

約数の個数: 24

約数和(自身を含む): 39381888

約数和(自身を除く): 18691660

約数列:

[1, 2, 4, 13, 26, 52, 103, 206, 412, 1339, 2678, 3863, 5356, 7726, 15452, 50219, 100438, 200876, 397889, 795778, 1591556, 5172557, 10345114, 20690228]

約数ペア:

[(1, 20690228), (2, 10345114), (4, 5172557), (13, 1591556), (26, 795778), (52, 397889), (103, 200876), (206, 100438), (412, 50219), (1339, 15452), (2678, 7726), (3863, 5356)]