12897740

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{13721}}^1$

素因数の和:13777

約数の個数: 24

約数和(自身を含む): 27663552

約数和(自身を除く): 14765812

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 13721, 27442, 54884, 68605, 137210, 274420, 644887, 1289774, 2579548, 3224435, 6448870, 12897740]

約数ペア:

[(1, 12897740), (2, 6448870), (4, 3224435), (5, 2579548), (10, 1289774), (20, 644887), (47, 274420), (94, 137210), (188, 68605), (235, 54884), (470, 27442), (940, 13721)]