21271263

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{14741}}^1$

素因数の和:14794

約数の個数: 16

約数和(自身を含む): 31370976

約数和(自身を除く): 10099713

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 14741, 44223, 191633, 545417, 574899, 1636251, 7090421, 21271263]

約数ペア:

[(1, 21271263), (3, 7090421), (13, 1636251), (37, 574899), (39, 545417), (111, 191633), (481, 44223), (1443, 14741)]