21000751205

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31580077}}^1$

素因数の和:31580108

約数の個数: 16

約数和(自身を含む): 30316874880

約数和(自身を除く): 9316123675

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 31580077, 157900385, 221060539, 600021463, 1105302695, 3000107315, 4200150241, 21000751205]

約数ペア:

[(1, 21000751205), (5, 4200150241), (7, 3000107315), (19, 1105302695), (35, 600021463), (95, 221060539), (133, 157900385), (665, 31580077)]