17989840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20443}}^1$

素因数の和:20467

約数の個数: 40

約数和(自身を含む): 45631008

約数和(自身を除く): 27641168

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 20443, 40886, 81772, 102215, 163544, 204430, 224873, 327088, 408860, 449746, 817720, 899492, 1124365, 1635440, 1798984, 2248730, 3597968, 4497460, 8994920, 17989840]

約数ペア:

[(1, 17989840), (2, 8994920), (4, 4497460), (5, 3597968), (8, 2248730), (10, 1798984), (11, 1635440), (16, 1124365), (20, 899492), (22, 817720), (40, 449746), (44, 408860), (55, 327088), (80, 224873), (88, 204430), (110, 163544), (176, 102215), (220, 81772), (440, 40886), (880, 20443)]