19780670

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21737}}^1$

素因数の和:21764

約数の個数: 32

約数和(自身を含む): 43823808

約数和(自身を除く): 24043138

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 21737, 43474, 108685, 152159, 217370, 282581, 304318, 565162, 760795, 1412905, 1521590, 1978067, 2825810, 3956134, 9890335, 19780670]

約数ペア:

[(1, 19780670), (2, 9890335), (5, 3956134), (7, 2825810), (10, 1978067), (13, 1521590), (14, 1412905), (26, 760795), (35, 565162), (65, 304318), (70, 282581), (91, 217370), (130, 152159), (182, 108685), (455, 43474), (910, 21737)]