21223605

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{857}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 36900864

約数和(自身を除く): 15677259

約数列:

[1, 3, 5, 13, 15, 39, 65, 127, 195, 381, 635, 857, 1651, 1905, 2571, 4285, 4953, 8255, 11141, 12855, 24765, 33423, 55705, 108839, 167115, 326517, 544195, 1414907, 1632585, 4244721, 7074535, 21223605]

約数ペア:

[(1, 21223605), (3, 7074535), (5, 4244721), (13, 1632585), (15, 1414907), (39, 544195), (65, 326517), (127, 167115), (195, 108839), (381, 55705), (635, 33423), (857, 24765), (1651, 12855), (1905, 11141), (2571, 8255), (4285, 4953)]