21555765

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6221}}^1$

素因数の和:6250

約数の個数: 48

約数和(自身を含む): 46590336

約数和(自身を除く): 25034571

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 165, 231, 315, 385, 495, 693, 1155, 3465, 6221, 18663, 31105, 43547, 55989, 68431, 93315, 130641, 205293, 217735, 279945, 342155, 391923, 479017, 615879, 653205, 1026465, 1437051, 1959615, 2395085, 3079395, 4311153, 7185255, 21555765]

約数ペア:

[(1, 21555765), (3, 7185255), (5, 4311153), (7, 3079395), (9, 2395085), (11, 1959615), (15, 1437051), (21, 1026465), (33, 653205), (35, 615879), (45, 479017), (55, 391923), (63, 342155), (77, 279945), (99, 217735), (105, 205293), (165, 130641), (231, 93315), (315, 68431), (385, 55989), (495, 43547), (693, 31105), (1155, 18663), (3465, 6221)]