20984005

素因数分解:

$5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2089}}^1$

素因数の和:2149

約数の個数: 24

約数和(自身を含む): 30020760

約数和(自身を除く): 9036755

約数列:

[1, 5, 7, 35, 41, 49, 205, 245, 287, 1435, 2009, 2089, 10045, 10445, 14623, 73115, 85649, 102361, 428245, 511805, 599543, 2997715, 4196801, 20984005]

約数ペア:

[(1, 20984005), (5, 4196801), (7, 2997715), (35, 599543), (41, 511805), (49, 428245), (205, 102361), (245, 85649), (287, 73115), (1435, 14623), (2009, 10445), (2089, 10045)]