21282268

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4721}}^1$

素因数の和:4762

約数の個数: 36

約数和(自身を含む): 45217872

約数和(自身を除く): 23935604

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4508, 4721, 9442, 18884, 33047, 66094, 108583, 132188, 217166, 231329, 434332, 462658, 760081, 925316, 1520162, 3040324, 5320567, 10641134, 21282268]

約数ペア:

[(1, 21282268), (2, 10641134), (4, 5320567), (7, 3040324), (14, 1520162), (23, 925316), (28, 760081), (46, 462658), (49, 434332), (92, 231329), (98, 217166), (161, 132188), (196, 108583), (322, 66094), (644, 33047), (1127, 18884), (2254, 9442), (4508, 4721)]