21513514

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{6563}}^1$

素因数の和:6725

約数の個数: 16

約数和(自身を含む): 35445600

約数和(自身を除く): 13932086

約数列:

[1, 2, 11, 22, 149, 298, 1639, 3278, 6563, 13126, 72193, 144386, 977887, 1955774, 10756757, 21513514]

約数ペア:

[(1, 21513514), (2, 10756757), (11, 1955774), (22, 977887), (149, 144386), (298, 72193), (1639, 13126), (3278, 6563)]