20509112

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197203}}^1$

素因数の和:197222

約数の個数: 16

約数和(自身を含む): 41412840

約数和(自身を除く): 20903728

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197203, 394406, 788812, 1577624, 2563639, 5127278, 10254556, 20509112]

約数ペア:

[(1, 20509112), (2, 10254556), (4, 5127278), (8, 2563639), (13, 1577624), (26, 788812), (52, 394406), (104, 197203)]