20780208

素因数分解:

$2^4\times 3^2\times {\mathrm{144307}}^1$

素因数の和:144321

約数の個数: 30

約数和(自身を含む): 58156124

約数和(自身を除く): 37375916

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 144307, 288614, 432921, 577228, 865842, 1154456, 1298763, 1731684, 2308912, 2597526, 3463368, 5195052, 6926736, 10390104, 20780208]

約数ペア:

[(1, 20780208), (2, 10390104), (3, 6926736), (4, 5195052), (6, 3463368), (8, 2597526), (9, 2308912), (12, 1731684), (16, 1298763), (18, 1154456), (24, 865842), (36, 577228), (48, 432921), (72, 288614), (144, 144307)]