18970105

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7039}}^1$

素因数の和:7069

約数の個数: 24

約数和(自身を含む): 28892160

約数和(自身を除く): 9922055

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 7039, 35195, 49273, 77429, 246365, 344911, 387145, 542003, 1724555, 2710015, 3794021, 18970105]

約数ペア:

[(1, 18970105), (5, 3794021), (7, 2710015), (11, 1724555), (35, 542003), (49, 387145), (55, 344911), (77, 246365), (245, 77429), (385, 49273), (539, 35195), (2695, 7039)]