21338908

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{227}}^1\times {\mathrm{331}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 38150784

約数和(自身を除く): 16811876

約数列:

[1, 2, 4, 71, 142, 227, 284, 331, 454, 662, 908, 1324, 16117, 23501, 32234, 47002, 64468, 75137, 94004, 150274, 300548, 5334727, 10669454, 21338908]

約数ペア:

[(1, 21338908), (2, 10669454), (4, 5334727), (71, 300548), (142, 150274), (227, 94004), (284, 75137), (331, 64468), (454, 47002), (662, 32234), (908, 23501), (1324, 16117)]