18778120

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20411}}^1$

素因数の和:20445

約数の個数: 32

約数和(自身を含む): 44089920

約数和(自身を除く): 25311800

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 20411, 40822, 81644, 102055, 163288, 204110, 408220, 469453, 816440, 938906, 1877812, 2347265, 3755624, 4694530, 9389060, 18778120]

約数ペア:

[(1, 18778120), (2, 9389060), (4, 4694530), (5, 3755624), (8, 2347265), (10, 1877812), (20, 938906), (23, 816440), (40, 469453), (46, 408220), (92, 204110), (115, 163288), (184, 102055), (230, 81644), (460, 40822), (920, 20411)]