20564355

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1409}}^1$

素因数の和:1563

約数の個数: 32

約数和(自身を含む): 37900800

約数和(自身を除く): 17336445

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 139, 417, 695, 973, 1409, 2085, 2919, 4227, 4865, 7045, 9863, 14595, 21135, 29589, 49315, 147945, 195851, 587553, 979255, 1370957, 2937765, 4112871, 6854785, 20564355]

約数ペア:

[(1, 20564355), (3, 6854785), (5, 4112871), (7, 2937765), (15, 1370957), (21, 979255), (35, 587553), (105, 195851), (139, 147945), (417, 49315), (695, 29589), (973, 21135), (1409, 14595), (2085, 9863), (2919, 7045), (4227, 4865)]