18111920

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{4817}}^1$

素因数の和:4877

約数の個数: 40

約数和(自身を含む): 43015104

約数和(自身を除く): 24903184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 4817, 9634, 19268, 24085, 38536, 48170, 77072, 96340, 192680, 226399, 385360, 452798, 905596, 1131995, 1811192, 2263990, 3622384, 4527980, 9055960, 18111920]

約数ペア:

[(1, 18111920), (2, 9055960), (4, 4527980), (5, 3622384), (8, 2263990), (10, 1811192), (16, 1131995), (20, 905596), (40, 452798), (47, 385360), (80, 226399), (94, 192680), (188, 96340), (235, 77072), (376, 48170), (470, 38536), (752, 24085), (940, 19268), (1880, 9634), (3760, 4817)]