28285840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{32143}}^1$

素因数の和:32167

約数の個数: 40

約数和(自身を含む): 71745408

約数和(自身を除く): 43459568

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 32143, 64286, 128572, 160715, 257144, 321430, 353573, 514288, 642860, 707146, 1285720, 1414292, 1767865, 2571440, 2828584, 3535730, 5657168, 7071460, 14142920, 28285840]

約数ペア:

[(1, 28285840), (2, 14142920), (4, 7071460), (5, 5657168), (8, 3535730), (10, 2828584), (11, 2571440), (16, 1767865), (20, 1414292), (22, 1285720), (40, 707146), (44, 642860), (55, 514288), (80, 353573), (88, 321430), (110, 257144), (176, 160715), (220, 128572), (440, 64286), (880, 32143)]