668868784

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{409}}^1\times {\mathrm{2377}}^1$

素因数の和:2837

約数の個数: 40

約数和(自身を含む): 1329872720

約数和(自身を除く): 661003936

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 409, 688, 818, 1636, 2377, 3272, 4754, 6544, 9508, 17587, 19016, 35174, 38032, 70348, 102211, 140696, 204422, 281392, 408844, 817688, 972193, 1635376, 1944386, 3888772, 7777544, 15555088, 41804299, 83608598, 167217196, 334434392, 668868784]

約数ペア:

[(1, 668868784), (2, 334434392), (4, 167217196), (8, 83608598), (16, 41804299), (43, 15555088), (86, 7777544), (172, 3888772), (344, 1944386), (409, 1635376), (688, 972193), (818, 817688), (1636, 408844), (2377, 281392), (3272, 204422), (4754, 140696), (6544, 102211), (9508, 70348), (17587, 38032), (19016, 35174)]