20571921

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{44819}}^1$

素因数の和:44845

約数の個数: 16

約数和(自身を含む): 32270400

約数和(自身を除く): 11698479

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 44819, 134457, 403371, 761923, 1210113, 2285769, 6857307, 20571921]

約数ペア:

[(1, 20571921), (3, 6857307), (9, 2285769), (17, 1210113), (27, 761923), (51, 403371), (153, 134457), (459, 44819)]