21917770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{353}}^1\times {\mathrm{887}}^1$

素因数の和:1254

約数の個数: 32

約数和(自身を含む): 45266688

約数和(自身を除く): 23348918

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 353, 706, 887, 1765, 1774, 2471, 3530, 4435, 4942, 6209, 8870, 12355, 12418, 24710, 31045, 62090, 313111, 626222, 1565555, 2191777, 3131110, 4383554, 10958885, 21917770]

約数ペア:

[(1, 21917770), (2, 10958885), (5, 4383554), (7, 3131110), (10, 2191777), (14, 1565555), (35, 626222), (70, 313111), (353, 62090), (706, 31045), (887, 24710), (1765, 12418), (1774, 12355), (2471, 8870), (3530, 6209), (4435, 4942)]