20166085640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4625249}}^1$

素因数の和:4625369

約数の個数: 32

約数和(自身を含む): 45789975000

約数和(自身を除く): 25623889360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4625249, 9250498, 18500996, 23126245, 37001992, 46252490, 92504980, 185009960, 504152141, 1008304282, 2016608564, 2520760705, 4033217128, 5041521410, 10083042820, 20166085640]

約数ペア:

[(1, 20166085640), (2, 10083042820), (4, 5041521410), (5, 4033217128), (8, 2520760705), (10, 2016608564), (20, 1008304282), (40, 504152141), (109, 185009960), (218, 92504980), (436, 46252490), (545, 37001992), (872, 23126245), (1090, 18500996), (2180, 9250498), (4360, 4625249)]