20964356

素因数分解:

$2^2\times 7^2\times {\mathrm{106961}}^1$

素因数の和:106979

約数の個数: 18

約数和(自身を含む): 42677838

約数和(自身を除く): 21713482

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 106961, 213922, 427844, 748727, 1497454, 2994908, 5241089, 10482178, 20964356]

約数ペア:

[(1, 20964356), (2, 10482178), (4, 5241089), (7, 2994908), (14, 1497454), (28, 748727), (49, 427844), (98, 213922), (196, 106961)]