21315656

素因数分解:

$2^3\times {\mathrm{1321}}^1\times {\mathrm{2017}}^1$

素因数の和:3344

約数の個数: 16

約数和(自身を含む): 40016940

約数和(自身を除く): 18701284

約数列:

[1, 2, 4, 8, 1321, 2017, 2642, 4034, 5284, 8068, 10568, 16136, 2664457, 5328914, 10657828, 21315656]

約数ペア:

[(1, 21315656), (2, 10657828), (4, 5328914), (8, 2664457), (1321, 16136), (2017, 10568), (2642, 8068), (4034, 5284)]