12986215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 19451520

約数和(自身を除く): 6465305

約数列:

[1, 5, 11, 17, 19, 43, 55, 85, 95, 187, 209, 215, 289, 323, 473, 731, 817, 935, 1045, 1445, 1615, 2365, 3179, 3553, 3655, 4085, 5491, 8041, 8987, 12427, 13889, 15895, 17765, 27455, 40205, 44935, 60401, 62135, 69445, 136697, 152779, 236113, 302005, 683485, 763895, 1180565, 2597243, 12986215]

約数ペア:

[(1, 12986215), (5, 2597243), (11, 1180565), (17, 763895), (19, 683485), (43, 302005), (55, 236113), (85, 152779), (95, 136697), (187, 69445), (209, 62135), (215, 60401), (289, 44935), (323, 40205), (473, 27455), (731, 17765), (817, 15895), (935, 13889), (1045, 12427), (1445, 8987), (1615, 8041), (2365, 5491), (3179, 4085), (3553, 3655)]