21174986

素因数分解:

$2^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{10151}}^1$

素因数の和:10309

約数の個数: 16

約数和(自身を含む): 36547200

約数和(自身を除く): 15372214

約数列:

[1, 2, 7, 14, 149, 298, 1043, 2086, 10151, 20302, 71057, 142114, 1512499, 3024998, 10587493, 21174986]

約数ペア:

[(1, 21174986), (2, 10587493), (7, 3024998), (14, 1512499), (149, 142114), (298, 71057), (1043, 20302), (2086, 10151)]