19794280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{44987}}^1$

素因数の和:45009

約数の個数: 32

約数和(自身を含む): 48587040

約数和(自身を除く): 28792760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 44987, 89974, 179948, 224935, 359896, 449870, 494857, 899740, 989714, 1799480, 1979428, 2474285, 3958856, 4948570, 9897140, 19794280]

約数ペア:

[(1, 19794280), (2, 9897140), (4, 4948570), (5, 3958856), (8, 2474285), (10, 1979428), (11, 1799480), (20, 989714), (22, 899740), (40, 494857), (44, 449870), (55, 359896), (88, 224935), (110, 179948), (220, 89974), (440, 44987)]