28152080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31991}}^1$

素因数の和:32015

約数の個数: 40

約数和(自身を含む): 71406144

約数和(自身を除く): 43254064

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 31991, 63982, 127964, 159955, 255928, 319910, 351901, 511856, 639820, 703802, 1279640, 1407604, 1759505, 2559280, 2815208, 3519010, 5630416, 7038020, 14076040, 28152080]

約数ペア:

[(1, 28152080), (2, 14076040), (4, 7038020), (5, 5630416), (8, 3519010), (10, 2815208), (11, 2559280), (16, 1759505), (20, 1407604), (22, 1279640), (40, 703802), (44, 639820), (55, 511856), (80, 351901), (88, 319910), (110, 255928), (176, 159955), (220, 127964), (440, 63982), (880, 31991)]