20681485

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{16349}}^1$

素因数の和:16388

約数の個数: 16

約数和(自身を含む): 28252800

約数和(自身を除く): 7571315

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 16349, 81745, 179839, 376027, 899195, 1880135, 4136297, 20681485]

約数ペア:

[(1, 20681485), (5, 4136297), (11, 1880135), (23, 899195), (55, 376027), (115, 179839), (253, 81745), (1265, 16349)]