18866440

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20507}}^1$

素因数の和:20541

約数の個数: 32

約数和(自身を含む): 44297280

約数和(自身を除く): 25430840

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 20507, 41014, 82028, 102535, 164056, 205070, 410140, 471661, 820280, 943322, 1886644, 2358305, 3773288, 4716610, 9433220, 18866440]

約数ペア:

[(1, 18866440), (2, 9433220), (4, 4716610), (5, 3773288), (8, 2358305), (10, 1886644), (20, 943322), (23, 820280), (40, 471661), (46, 410140), (92, 205070), (115, 164056), (184, 102535), (230, 82028), (460, 41014), (920, 20507)]