20812355

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{1321}}^1$

素因数の和:1486

約数の個数: 16

約数和(自身を含む): 26270784

約数和(自身を除く): 5458429

約数列:

[1, 5, 23, 115, 137, 685, 1321, 3151, 6605, 15755, 30383, 151915, 180977, 904885, 4162471, 20812355]

約数ペア:

[(1, 20812355), (5, 4162471), (23, 904885), (115, 180977), (137, 151915), (685, 30383), (1321, 15755), (3151, 6605)]