21377495

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{379}}^1\times {\mathrm{389}}^1$

素因数の和:802

約数の個数: 16

約数和(自身を含む): 26676000

約数和(自身を除く): 5298505

約数列:

[1, 5, 29, 145, 379, 389, 1895, 1945, 10991, 11281, 54955, 56405, 147431, 737155, 4275499, 21377495]

約数ペア:

[(1, 21377495), (5, 4275499), (29, 737155), (145, 147431), (379, 56405), (389, 54955), (1895, 11281), (1945, 10991)]