19804015

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{51439}}^1$

素因数の和:51462

約数の個数: 16

約数和(自身を含む): 29629440

約数和(自身を除く): 9825425

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 51439, 257195, 360073, 565829, 1800365, 2829145, 3960803, 19804015]

約数ペア:

[(1, 19804015), (5, 3960803), (7, 2829145), (11, 1800365), (35, 565829), (55, 360073), (77, 257195), (385, 51439)]