21219952

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102019}}^1$

素因数の和:102040

約数の個数: 20

約数和(自身を含む): 44276680

約数和(自身を除く): 23056728

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102019, 204038, 408076, 816152, 1326247, 1632304, 2652494, 5304988, 10609976, 21219952]

約数ペア:

[(1, 21219952), (2, 10609976), (4, 5304988), (8, 2652494), (13, 1632304), (16, 1326247), (26, 816152), (52, 408076), (104, 204038), (208, 102019)]