20720735

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31159}}^1$

素因数の和:31190

約数の個数: 16

約数和(自身を含む): 29913600

約数和(自身を除く): 9192865

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 31159, 155795, 218113, 592021, 1090565, 2960105, 4144147, 20720735]

約数ペア:

[(1, 20720735), (5, 4144147), (7, 2960105), (19, 1090565), (35, 592021), (95, 218113), (133, 155795), (665, 31159)]