19192221

素因数分解:

$3^4\times {\mathrm{313}}^1\times {\mathrm{757}}^1$

素因数の和:1082

約数の個数: 20

約数和(自身を含む): 28799452

約数和(自身を除く): 9607231

約数列:

[1, 3, 9, 27, 81, 313, 757, 939, 2271, 2817, 6813, 8451, 20439, 25353, 61317, 236941, 710823, 2132469, 6397407, 19192221]

約数ペア:

[(1, 19192221), (3, 6397407), (9, 2132469), (27, 710823), (81, 236941), (313, 61317), (757, 25353), (939, 20439), (2271, 8451), (2817, 6813)]