20889418

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{23159}}^1$

素因数の和:23213

約数の個数: 16

約数和(自身を含む): 35017920

約数和(自身を除く): 14128502

約数列:

[1, 2, 11, 22, 41, 82, 451, 902, 23159, 46318, 254749, 509498, 949519, 1899038, 10444709, 20889418]

約数ペア:

[(1, 20889418), (2, 10444709), (11, 1899038), (22, 949519), (41, 509498), (82, 254749), (451, 46318), (902, 23159)]