638567908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{907}}^1\times {\mathrm{16001}}^1$

素因数の和:16923

約数の個数: 24

約数和(自身を含む): 1220504544

約数和(自身を除く): 581936636

約数列:

[1, 2, 4, 11, 22, 44, 907, 1814, 3628, 9977, 16001, 19954, 32002, 39908, 64004, 176011, 352022, 704044, 14512907, 29025814, 58051628, 159641977, 319283954, 638567908]

約数ペア:

[(1, 638567908), (2, 319283954), (4, 159641977), (11, 58051628), (22, 29025814), (44, 14512907), (907, 704044), (1814, 352022), (3628, 176011), (9977, 64004), (16001, 39908), (19954, 32002)]