20710280

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9769}}^1$

素因数の和:9833

約数の個数: 32

約数和(自身を含む): 47482200

約数和(自身を除く): 26771920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9769, 19538, 39076, 48845, 78152, 97690, 195380, 390760, 517757, 1035514, 2071028, 2588785, 4142056, 5177570, 10355140, 20710280]

約数ペア:

[(1, 20710280), (2, 10355140), (4, 5177570), (5, 4142056), (8, 2588785), (10, 2071028), (20, 1035514), (40, 517757), (53, 390760), (106, 195380), (212, 97690), (265, 78152), (424, 48845), (530, 39076), (1060, 19538), (2120, 9769)]