28171715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1$

素因数の和:132

約数の個数: 48

約数和(自身を含む): 42039648

約数和(自身を除く): 13867933

約数列:

[1, 5, 11, 13, 31, 41, 55, 65, 143, 155, 205, 341, 403, 451, 533, 715, 961, 1271, 1705, 2015, 2255, 2665, 4433, 4805, 5863, 6355, 10571, 12493, 13981, 16523, 22165, 29315, 39401, 52855, 62465, 69905, 82615, 137423, 181753, 197005, 433411, 512213, 687115, 908765, 2167055, 2561065, 5634343, 28171715]

約数ペア:

[(1, 28171715), (5, 5634343), (11, 2561065), (13, 2167055), (31, 908765), (41, 687115), (55, 512213), (65, 433411), (143, 197005), (155, 181753), (205, 137423), (341, 82615), (403, 69905), (451, 62465), (533, 52855), (715, 39401), (961, 29315), (1271, 22165), (1705, 16523), (2015, 13981), (2255, 12493), (2665, 10571), (4433, 6355), (4805, 5863)]