638470

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{1303}}^1$

素因数の和:1324

約数の個数: 24

約数和(自身を含む): 1337904

約数和(自身を除く): 699434

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 1303, 2606, 6515, 9121, 13030, 18242, 45605, 63847, 91210, 127694, 319235, 638470]

約数ペア:

[(1, 638470), (2, 319235), (5, 127694), (7, 91210), (10, 63847), (14, 45605), (35, 18242), (49, 13030), (70, 9121), (98, 6515), (245, 2606), (490, 1303)]