20760280

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1847}}^1$

素因数の和:2139

約数の個数: 32

約数和(自身を含む): 46902240

約数和(自身を除く): 26141960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 1847, 2248, 2810, 3694, 5620, 7388, 9235, 11240, 14776, 18470, 36940, 73880, 519007, 1038014, 2076028, 2595035, 4152056, 5190070, 10380140, 20760280]

約数ペア:

[(1, 20760280), (2, 10380140), (4, 5190070), (5, 4152056), (8, 2595035), (10, 2076028), (20, 1038014), (40, 519007), (281, 73880), (562, 36940), (1124, 18470), (1405, 14776), (1847, 11240), (2248, 9235), (2810, 7388), (3694, 5620)]