20996859

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{5227}}^1$

素因数の和:5346

約数の個数: 16

約数和(自身を含む): 30447872

約数和(自身を除く): 9451013

約数列:

[1, 3, 13, 39, 103, 309, 1339, 4017, 5227, 15681, 67951, 203853, 538381, 1615143, 6998953, 20996859]

約数ペア:

[(1, 20996859), (3, 6998953), (13, 1615143), (39, 538381), (103, 203853), (309, 67951), (1339, 15681), (4017, 5227)]