20577880

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{1433}}^1$

素因数の和:1803

約数の個数: 32

約数和(自身を含む): 46461600

約数和(自身を除く): 25883720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1433, 1436, 1795, 2866, 2872, 3590, 5732, 7165, 7180, 11464, 14330, 14360, 28660, 57320, 514447, 1028894, 2057788, 2572235, 4115576, 5144470, 10288940, 20577880]

約数ペア:

[(1, 20577880), (2, 10288940), (4, 5144470), (5, 4115576), (8, 2572235), (10, 2057788), (20, 1028894), (40, 514447), (359, 57320), (718, 28660), (1433, 14360), (1436, 14330), (1795, 11464), (2866, 7180), (2872, 7165), (3590, 5732)]