21475685

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{461}}^1$

素因数の和:506

約数の個数: 32

約数和(自身を含む): 32465664

約数和(自身を除く): 10989979

約数列:

[1, 5, 7, 11, 35, 55, 77, 121, 385, 461, 605, 847, 1331, 2305, 3227, 4235, 5071, 6655, 9317, 16135, 25355, 35497, 46585, 55781, 177485, 278905, 390467, 613591, 1952335, 3067955, 4295137, 21475685]

約数ペア:

[(1, 21475685), (5, 4295137), (7, 3067955), (11, 1952335), (35, 613591), (55, 390467), (77, 278905), (121, 177485), (385, 55781), (461, 46585), (605, 35497), (847, 25355), (1331, 16135), (2305, 9317), (3227, 6655), (4235, 5071)]