20710820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79657}}^1$

素因数の和:79679

約数の個数: 24

約数和(自身を含む): 46838904

約数和(自身を除く): 26128084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79657, 159314, 318628, 398285, 796570, 1035541, 1593140, 2071082, 4142164, 5177705, 10355410, 20710820]

約数ペア:

[(1, 20710820), (2, 10355410), (4, 5177705), (5, 4142164), (10, 2071082), (13, 1593140), (20, 1035541), (26, 796570), (52, 398285), (65, 318628), (130, 159314), (260, 79657)]