20926990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1549}}^1$

素因数の和:1756

約数の個数: 32

約数和(自身を含む): 43300800

約数和(自身を除く): 22373810

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 193, 386, 965, 1351, 1549, 1930, 2702, 3098, 6755, 7745, 10843, 13510, 15490, 21686, 54215, 108430, 298957, 597914, 1494785, 2092699, 2989570, 4185398, 10463495, 20926990]

約数ペア:

[(1, 20926990), (2, 10463495), (5, 4185398), (7, 2989570), (10, 2092699), (14, 1494785), (35, 597914), (70, 298957), (193, 108430), (386, 54215), (965, 21686), (1351, 15490), (1549, 13510), (1930, 10843), (2702, 7745), (3098, 6755)]