200918620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205019}}^1$

素因数の和:205042

約数の個数: 36

約数和(自身を含む): 490817880

約数和(自身を除く): 289899260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205019, 410038, 820076, 1025095, 1435133, 2050190, 2870266, 4100380, 5740532, 7175665, 10045931, 14351330, 20091862, 28702660, 40183724, 50229655, 100459310, 200918620]

約数ペア:

[(1, 200918620), (2, 100459310), (4, 50229655), (5, 40183724), (7, 28702660), (10, 20091862), (14, 14351330), (20, 10045931), (28, 7175665), (35, 5740532), (49, 4100380), (70, 2870266), (98, 2050190), (140, 1435133), (196, 1025095), (245, 820076), (490, 410038), (980, 205019)]