21399112

素因数分解:

$2^3\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2917}}^1$

素因数の和:3061

約数の個数: 32

約数和(自身を含む): 46221120

約数和(自身を除く): 24822008

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 131, 262, 524, 917, 1048, 1834, 2917, 3668, 5834, 7336, 11668, 20419, 23336, 40838, 81676, 163352, 382127, 764254, 1528508, 2674889, 3057016, 5349778, 10699556, 21399112]

約数ペア:

[(1, 21399112), (2, 10699556), (4, 5349778), (7, 3057016), (8, 2674889), (14, 1528508), (28, 764254), (56, 382127), (131, 163352), (262, 81676), (524, 40838), (917, 23336), (1048, 20419), (1834, 11668), (2917, 7336), (3668, 5834)]