12721360

素因数分解:

$2^4\times 5^1\times {\mathrm{159017}}^1$

素因数の和:159030

約数の個数: 20

約数和(自身を含む): 29577348

約数和(自身を除く): 16855988

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 159017, 318034, 636068, 795085, 1272136, 1590170, 2544272, 3180340, 6360680, 12721360]

約数ペア:

[(1, 12721360), (2, 6360680), (4, 3180340), (5, 2544272), (8, 1590170), (10, 1272136), (16, 795085), (20, 636068), (40, 318034), (80, 159017)]