20289663

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{39551}}^1$

素因数の和:39579

約数の個数: 16

約数和(自身を含む): 31641600

約数和(自身を除く): 11351937

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 39551, 118653, 355959, 751469, 1067877, 2254407, 6763221, 20289663]

約数ペア:

[(1, 20289663), (3, 6763221), (9, 2254407), (19, 1067877), (27, 751469), (57, 355959), (171, 118653), (513, 39551)]