21406448

素因数分解:

$2^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1459}}^1$

素因数の和:1605

約数の個数: 40

約数和(自身を含む): 47794560

約数和(自身を除く): 26388112

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 131, 262, 524, 917, 1048, 1459, 1834, 2096, 2918, 3668, 5836, 7336, 10213, 11672, 14672, 20426, 23344, 40852, 81704, 163408, 191129, 382258, 764516, 1337903, 1529032, 2675806, 3058064, 5351612, 10703224, 21406448]

約数ペア:

[(1, 21406448), (2, 10703224), (4, 5351612), (7, 3058064), (8, 2675806), (14, 1529032), (16, 1337903), (28, 764516), (56, 382258), (112, 191129), (131, 163408), (262, 81704), (524, 40852), (917, 23344), (1048, 20426), (1459, 14672), (1834, 11672), (2096, 10213), (2918, 7336), (3668, 5836)]