19979165

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 27216000

約数和(自身を除く): 7236835

約数列:

[1, 5, 17, 19, 85, 89, 95, 139, 323, 445, 695, 1513, 1615, 1691, 2363, 2641, 7565, 8455, 11815, 12371, 13205, 28747, 44897, 61855, 143735, 210307, 224485, 235049, 1051535, 1175245, 3995833, 19979165]

約数ペア:

[(1, 19979165), (5, 3995833), (17, 1175245), (19, 1051535), (85, 235049), (89, 224485), (95, 210307), (139, 143735), (323, 61855), (445, 44897), (695, 28747), (1513, 13205), (1615, 12371), (1691, 11815), (2363, 8455), (2641, 7565)]