20511310

素因数分解:

$2^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{9721}}^1$

素因数の和:9939

約数の個数: 16

約数和(自身を含む): 37099152

約数和(自身を除く): 16587842

約数列:

[1, 2, 5, 10, 211, 422, 1055, 2110, 9721, 19442, 48605, 97210, 2051131, 4102262, 10255655, 20511310]

約数ペア:

[(1, 20511310), (2, 10255655), (5, 4102262), (10, 2051131), (211, 97210), (422, 48605), (1055, 19442), (2110, 9721)]