20780784

素因数分解:

$2^4\times 3^2\times {\mathrm{144311}}^1$

素因数の和:144325

約数の個数: 30

約数和(自身を含む): 58157736

約数和(自身を除く): 37376952

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 144311, 288622, 432933, 577244, 865866, 1154488, 1298799, 1731732, 2308976, 2597598, 3463464, 5195196, 6926928, 10390392, 20780784]

約数ペア:

[(1, 20780784), (2, 10390392), (3, 6926928), (4, 5195196), (6, 3463464), (8, 2597598), (9, 2308976), (12, 1731732), (16, 1298799), (18, 1154488), (24, 865866), (36, 577244), (48, 432933), (72, 288622), (144, 144311)]