20989827

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{283}}^1$

素因数の和:400

約数の個数: 32

約数和(自身を含む): 32444160

約数和(自身を除く): 11454333

約数列:

[1, 3, 9, 27, 41, 67, 123, 201, 283, 369, 603, 849, 1107, 1809, 2547, 2747, 7641, 8241, 11603, 18961, 24723, 34809, 56883, 74169, 104427, 170649, 313281, 511947, 777401, 2332203, 6996609, 20989827]

約数ペア:

[(1, 20989827), (3, 6996609), (9, 2332203), (27, 777401), (41, 511947), (67, 313281), (123, 170649), (201, 104427), (283, 74169), (369, 56883), (603, 34809), (849, 24723), (1107, 18961), (1809, 11603), (2547, 8241), (2747, 7641)]