20928921

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31567}}^1$

素因数の和:31600

約数の個数: 16

約数和(自身を含む): 31820544

約数和(自身を除く): 10891623

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 31567, 94701, 410371, 536639, 1231113, 1609917, 6976307, 20928921]

約数ペア:

[(1, 20928921), (3, 6976307), (13, 1609917), (17, 1231113), (39, 536639), (51, 410371), (221, 94701), (663, 31567)]