21361205

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{1319}}^1$

素因数の和:1444

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 5249995

約数列:

[1, 5, 41, 79, 205, 395, 1319, 3239, 6595, 16195, 54079, 104201, 270395, 521005, 4272241, 21361205]

約数ペア:

[(1, 21361205), (5, 4272241), (41, 521005), (79, 270395), (205, 104201), (395, 54079), (1319, 16195), (3239, 6595)]