12865815

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 23406240

約数和(自身を除く): 10540425

約数列:

[1, 3, 5, 9, 15, 43, 45, 61, 109, 129, 183, 215, 305, 327, 387, 545, 549, 645, 915, 981, 1635, 1935, 2623, 2745, 4687, 4905, 6649, 7869, 13115, 14061, 19947, 23435, 23607, 33245, 39345, 42183, 59841, 70305, 99735, 118035, 210915, 285907, 299205, 857721, 1429535, 2573163, 4288605, 12865815]

約数ペア:

[(1, 12865815), (3, 4288605), (5, 2573163), (9, 1429535), (15, 857721), (43, 299205), (45, 285907), (61, 210915), (109, 118035), (129, 99735), (183, 70305), (215, 59841), (305, 42183), (327, 39345), (387, 33245), (545, 23607), (549, 23435), (645, 19947), (915, 14061), (981, 13115), (1635, 7869), (1935, 6649), (2623, 4905), (2745, 4687)]