20994160

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23857}}^1$

素因数の和:23881

約数の個数: 40

約数和(自身を含む): 53251056

約数和(自身を除く): 32256896

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23857, 47714, 95428, 119285, 190856, 238570, 262427, 381712, 477140, 524854, 954280, 1049708, 1312135, 1908560, 2099416, 2624270, 4198832, 5248540, 10497080, 20994160]

約数ペア:

[(1, 20994160), (2, 10497080), (4, 5248540), (5, 4198832), (8, 2624270), (10, 2099416), (11, 1908560), (16, 1312135), (20, 1049708), (22, 954280), (40, 524854), (44, 477140), (55, 381712), (80, 262427), (88, 238570), (110, 190856), (176, 119285), (220, 95428), (440, 47714), (880, 23857)]