18884998

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{19963}}^1$

素因数の和:20019

約数の個数: 16

約数和(自身を含む): 31622976

約数和(自身を除く): 12737978

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 19963, 39926, 219593, 439186, 858409, 1716818, 9442499, 18884998]

約数ペア:

[(1, 18884998), (2, 9442499), (11, 1716818), (22, 858409), (43, 439186), (86, 219593), (473, 39926), (946, 19963)]