81285687

素因数分解:

$3^6\times 7^1\times {\mathrm{17}}^1\times {\mathrm{937}}^1$

素因数の和:979

約数の個数: 56

約数和(自身を含む): 147633696

約数和(自身を除く): 66348009

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 153, 189, 243, 357, 459, 567, 729, 937, 1071, 1377, 1701, 2811, 3213, 4131, 5103, 6559, 8433, 9639, 12393, 15929, 19677, 25299, 28917, 47787, 59031, 75897, 86751, 111503, 143361, 177093, 227691, 334509, 430083, 531279, 683073, 1003527, 1290249, 1593837, 3010581, 3870747, 4781511, 9031743, 11612241, 27095229, 81285687]

約数ペア:

[(1, 81285687), (3, 27095229), (7, 11612241), (9, 9031743), (17, 4781511), (21, 3870747), (27, 3010581), (51, 1593837), (63, 1290249), (81, 1003527), (119, 683073), (153, 531279), (189, 430083), (243, 334509), (357, 227691), (459, 177093), (567, 143361), (729, 111503), (937, 86751), (1071, 75897), (1377, 59031), (1701, 47787), (2811, 28917), (3213, 25299), (4131, 19677), (5103, 15929), (6559, 12393), (8433, 9639)]