20809280

素因数分解:

$2^6\times 5^1\times {\mathrm{65029}}^1$

素因数の和:65046

約数の個数: 28

約数和(自身を含む): 49552860

約数和(自身を除く): 28743580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65029, 130058, 260116, 325145, 520232, 650290, 1040464, 1300580, 2080928, 2601160, 4161856, 5202320, 10404640, 20809280]

約数ペア:

[(1, 20809280), (2, 10404640), (4, 5202320), (5, 4161856), (8, 2601160), (10, 2080928), (16, 1300580), (20, 1040464), (32, 650290), (40, 520232), (64, 325145), (80, 260116), (160, 130058), (320, 65029)]