18605840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21143}}^1$

素因数の和:21167

約数の個数: 40

約数和(自身を含む): 47193408

約数和(自身を除く): 28587568

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21143, 42286, 84572, 105715, 169144, 211430, 232573, 338288, 422860, 465146, 845720, 930292, 1162865, 1691440, 1860584, 2325730, 3721168, 4651460, 9302920, 18605840]

約数ペア:

[(1, 18605840), (2, 9302920), (4, 4651460), (5, 3721168), (8, 2325730), (10, 1860584), (11, 1691440), (16, 1162865), (20, 930292), (22, 845720), (40, 465146), (44, 422860), (55, 338288), (80, 232573), (88, 211430), (110, 169144), (176, 105715), (220, 84572), (440, 42286), (880, 21143)]