998620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1019}}^1$

素因数の和:1042

約数の個数: 36

約数和(自身を含む): 2441880

約数和(自身を除く): 1443260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1019, 2038, 4076, 5095, 7133, 10190, 14266, 20380, 28532, 35665, 49931, 71330, 99862, 142660, 199724, 249655, 499310, 998620]

約数ペア:

[(1, 998620), (2, 499310), (4, 249655), (5, 199724), (7, 142660), (10, 99862), (14, 71330), (20, 49931), (28, 35665), (35, 28532), (49, 20380), (70, 14266), (98, 10190), (140, 7133), (196, 5095), (245, 4076), (490, 2038), (980, 1019)]