21785445

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4001}}^1$

素因数の和:4034

約数の個数: 36

約数和(自身を含む): 41516748

約数和(自身を除く): 19731303

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 363, 495, 605, 1089, 1815, 4001, 5445, 12003, 20005, 36009, 44011, 60015, 132033, 180045, 220055, 396099, 484121, 660165, 1452363, 1980495, 2420605, 4357089, 7261815, 21785445]

約数ペア:

[(1, 21785445), (3, 7261815), (5, 4357089), (9, 2420605), (11, 1980495), (15, 1452363), (33, 660165), (45, 484121), (55, 396099), (99, 220055), (121, 180045), (165, 132033), (363, 60015), (495, 44011), (605, 36009), (1089, 20005), (1815, 12003), (4001, 5445)]