21016568

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{227}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 40383360

約数和(自身を除く): 19366792

約数列:

[1, 2, 4, 8, 71, 142, 163, 227, 284, 326, 454, 568, 652, 908, 1304, 1816, 11573, 16117, 23146, 32234, 37001, 46292, 64468, 74002, 92584, 128936, 148004, 296008, 2627071, 5254142, 10508284, 21016568]

約数ペア:

[(1, 21016568), (2, 10508284), (4, 5254142), (8, 2627071), (71, 296008), (142, 148004), (163, 128936), (227, 92584), (284, 74002), (326, 64468), (454, 46292), (568, 37001), (652, 32234), (908, 23146), (1304, 16117), (1816, 11573)]