21886865

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4373}}^1$

素因数の和:4409

約数の個数: 32

約数和(自身を含む): 35271936

約数和(自身を除く): 13385071

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4373, 5005, 21865, 30611, 48103, 56849, 153055, 240515, 284245, 336721, 397943, 625339, 1683605, 1989715, 3126695, 4377373, 21886865]

約数ペア:

[(1, 21886865), (5, 4377373), (7, 3126695), (11, 1989715), (13, 1683605), (35, 625339), (55, 397943), (65, 336721), (77, 284245), (91, 240515), (143, 153055), (385, 56849), (455, 48103), (715, 30611), (1001, 21865), (4373, 5005)]