21996315

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1201}}^1$

素因数の和:1260

約数の個数: 48

約数和(自身を含む): 42752736

約数和(自身を除く): 20756421

約数列:

[1, 3, 5, 9, 11, 15, 33, 37, 45, 55, 99, 111, 165, 185, 333, 407, 495, 555, 1201, 1221, 1665, 2035, 3603, 3663, 6005, 6105, 10809, 13211, 18015, 18315, 39633, 44437, 54045, 66055, 118899, 133311, 198165, 222185, 399933, 488807, 594495, 666555, 1466421, 1999665, 2444035, 4399263, 7332105, 21996315]

約数ペア:

[(1, 21996315), (3, 7332105), (5, 4399263), (9, 2444035), (11, 1999665), (15, 1466421), (33, 666555), (37, 594495), (45, 488807), (55, 399933), (99, 222185), (111, 198165), (165, 133311), (185, 118899), (333, 66055), (407, 54045), (495, 44437), (555, 39633), (1201, 18315), (1221, 18015), (1665, 13211), (2035, 10809), (3603, 6105), (3663, 6005)]