21020995

素因数分解:

$5^1\times {\mathrm{37}}^3\times {\mathrm{83}}^1$

素因数の和:199

約数の個数: 16

約数和(自身を含む): 26238240

約数和(自身を除く): 5217245

約数列:

[1, 5, 37, 83, 185, 415, 1369, 3071, 6845, 15355, 50653, 113627, 253265, 568135, 4204199, 21020995]

約数ペア:

[(1, 21020995), (5, 4204199), (37, 568135), (83, 253265), (185, 113627), (415, 50653), (1369, 15355), (3071, 6845)]