21272878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13619}}^1$

素因数の和:13703

約数の個数: 16

約数和(自身を含む): 35303040

約数和(自身を除く): 14030162

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13619, 27238, 149809, 299618, 966949, 1933898, 10636439, 21272878]

約数ペア:

[(1, 21272878), (2, 10636439), (11, 1933898), (22, 966949), (71, 299618), (142, 149809), (781, 27238), (1562, 13619)]