20123908

素因数分解:

$2^2\times 7^2\times {\mathrm{102673}}^1$

素因数の和:102691

約数の個数: 18

約数和(自身を含む): 40966926

約数和(自身を除く): 20843018

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 102673, 205346, 410692, 718711, 1437422, 2874844, 5030977, 10061954, 20123908]

約数ペア:

[(1, 20123908), (2, 10061954), (4, 5030977), (7, 2874844), (14, 1437422), (28, 718711), (49, 410692), (98, 205346), (196, 102673)]