20017640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26339}}^1$

素因数の和:26369

約数の個数: 32

約数和(自身を含む): 47412000

約数和(自身を除く): 27394360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 26339, 52678, 105356, 131695, 210712, 263390, 500441, 526780, 1000882, 1053560, 2001764, 2502205, 4003528, 5004410, 10008820, 20017640]

約数ペア:

[(1, 20017640), (2, 10008820), (4, 5004410), (5, 4003528), (8, 2502205), (10, 2001764), (19, 1053560), (20, 1000882), (38, 526780), (40, 500441), (76, 263390), (95, 210712), (152, 131695), (190, 105356), (380, 52678), (760, 26339)]