1273640240

素因数分解:

$2^4\times 5^1\times {\mathrm{15920503}}^1$

素因数の和:15920516

約数の個数: 20

約数和(自身を含む): 2961213744

約数和(自身を除く): 1687573504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15920503, 31841006, 63682012, 79602515, 127364024, 159205030, 254728048, 318410060, 636820120, 1273640240]

約数ペア:

[(1, 1273640240), (2, 636820120), (4, 318410060), (5, 254728048), (8, 159205030), (10, 127364024), (16, 79602515), (20, 63682012), (40, 31841006), (80, 15920503)]