18637647920

素因数分解:

$2^4\times 5^1\times {\mathrm{443}}^1\times {\mathrm{525893}}^1$

素因数の和:526349

約数の個数: 40

約数和(自身を含む): 43430430096

約数和(自身を除く): 24792782176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 443, 886, 1772, 2215, 3544, 4430, 7088, 8860, 17720, 35440, 525893, 1051786, 2103572, 2629465, 4207144, 5258930, 8414288, 10517860, 21035720, 42071440, 232970599, 465941198, 931882396, 1164852995, 1863764792, 2329705990, 3727529584, 4659411980, 9318823960, 18637647920]

約数ペア:

[(1, 18637647920), (2, 9318823960), (4, 4659411980), (5, 3727529584), (8, 2329705990), (10, 1863764792), (16, 1164852995), (20, 931882396), (40, 465941198), (80, 232970599), (443, 42071440), (886, 21035720), (1772, 10517860), (2215, 8414288), (3544, 5258930), (4430, 4207144), (7088, 2629465), (8860, 2103572), (17720, 1051786), (35440, 525893)]