80881725

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{907}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 141865920

約数和(自身を除く): 60984195

約数列:

[1, 3, 5, 15, 25, 29, 41, 75, 87, 123, 145, 205, 435, 615, 725, 907, 1025, 1189, 2175, 2721, 3075, 3567, 4535, 5945, 13605, 17835, 22675, 26303, 29725, 37187, 68025, 78909, 89175, 111561, 131515, 185935, 394545, 557805, 657575, 929675, 1078423, 1972725, 2789025, 3235269, 5392115, 16176345, 26960575, 80881725]

約数ペア:

[(1, 80881725), (3, 26960575), (5, 16176345), (15, 5392115), (25, 3235269), (29, 2789025), (41, 1972725), (75, 1078423), (87, 929675), (123, 657575), (145, 557805), (205, 394545), (435, 185935), (615, 131515), (725, 111561), (907, 89175), (1025, 78909), (1189, 68025), (2175, 37187), (2721, 29725), (3075, 26303), (3567, 22675), (4535, 17835), (5945, 13605)]