20805575

素因数分解:

$5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1949}}^1$

素因数の和:2027

約数の個数: 24

約数和(自身を含む): 29983200

約数和(自身を除く): 9177625

約数列:

[1, 5, 7, 25, 35, 61, 175, 305, 427, 1525, 1949, 2135, 9745, 10675, 13643, 48725, 68215, 118889, 341075, 594445, 832223, 2972225, 4161115, 20805575]

約数ペア:

[(1, 20805575), (5, 4161115), (7, 2972225), (25, 832223), (35, 594445), (61, 341075), (175, 118889), (305, 68215), (427, 48725), (1525, 13643), (1949, 10675), (2135, 9745)]