81189717

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:786

約数の個数: 48

約数和(自身を含む): 135979200

約数和(自身を除く): 54789483

約数列:

[1, 3, 7, 19, 21, 41, 49, 57, 123, 133, 147, 287, 399, 709, 779, 861, 931, 2009, 2127, 2337, 2793, 4963, 5453, 6027, 13471, 14889, 16359, 29069, 34741, 38171, 40413, 87207, 94297, 104223, 114513, 203483, 282891, 552311, 610449, 660079, 1424381, 1656933, 1980237, 3866177, 4273143, 11598531, 27063239, 81189717]

約数ペア:

[(1, 81189717), (3, 27063239), (7, 11598531), (19, 4273143), (21, 3866177), (41, 1980237), (49, 1656933), (57, 1424381), (123, 660079), (133, 610449), (147, 552311), (287, 282891), (399, 203483), (709, 114513), (779, 104223), (861, 94297), (931, 87207), (2009, 40413), (2127, 38171), (2337, 34741), (2793, 29069), (4963, 16359), (5453, 14889), (6027, 13471)]