20980258

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{193}}^1$

素因数の和:358

約数の個数: 32

約数和(自身を含む): 35297136

約数和(自身を除く): 14316878

約数列:

[1, 2, 13, 26, 37, 74, 113, 193, 226, 386, 481, 962, 1469, 2509, 2938, 4181, 5018, 7141, 8362, 14282, 21809, 43618, 54353, 92833, 108706, 185666, 283517, 567034, 806933, 1613866, 10490129, 20980258]

約数ペア:

[(1, 20980258), (2, 10490129), (13, 1613866), (26, 806933), (37, 567034), (74, 283517), (113, 185666), (193, 108706), (226, 92833), (386, 54353), (481, 43618), (962, 21809), (1469, 14282), (2509, 8362), (2938, 7141), (4181, 5018)]