20023172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{919}}^1$

素因数の和:1355

約数の個数: 24

約数和(自身を含む): 37867200

約数和(自身を除く): 17844028

約数列:

[1, 2, 4, 13, 26, 52, 419, 838, 919, 1676, 1838, 3676, 5447, 10894, 11947, 21788, 23894, 47788, 385061, 770122, 1540244, 5005793, 10011586, 20023172]

約数ペア:

[(1, 20023172), (2, 10011586), (4, 5005793), (13, 1540244), (26, 770122), (52, 385061), (419, 47788), (838, 23894), (919, 21788), (1676, 11947), (1838, 10894), (3676, 5447)]