20120784921

素因数分解:

$3^2\times {\mathrm{401}}^1\times {\mathrm{5575169}}^1$

素因数の和:5575576

約数の個数: 12

約数和(自身を含む): 29135838420

約数和(自身を除く): 9015053499

約数列:

[1, 3, 9, 401, 1203, 3609, 5575169, 16725507, 50176521, 2235642769, 6706928307, 20120784921]

約数ペア:

[(1, 20120784921), (3, 6706928307), (9, 2235642769), (401, 50176521), (1203, 16725507), (3609, 5575169)]