21008265

素因数分解:

$3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{10223}}^1$

素因数の和:10368

約数の個数: 16

約数和(自身を含む): 33861888

約数和(自身を除く): 12853623

約数列:

[1, 3, 5, 15, 137, 411, 685, 2055, 10223, 30669, 51115, 153345, 1400551, 4201653, 7002755, 21008265]

約数ペア:

[(1, 21008265), (3, 7002755), (5, 4201653), (15, 1400551), (137, 153345), (411, 51115), (685, 30669), (2055, 10223)]