21520898

素因数分解:

$2^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{5107}}^1$

素因数の和:5166

約数の個数: 24

約数和(自身を含む): 38432592

約数和(自身を除く): 16911694

約数列:

[1, 2, 7, 14, 43, 49, 86, 98, 301, 602, 2107, 4214, 5107, 10214, 35749, 71498, 219601, 250243, 439202, 500486, 1537207, 3074414, 10760449, 21520898]

約数ペア:

[(1, 21520898), (2, 10760449), (7, 3074414), (14, 1537207), (43, 500486), (49, 439202), (86, 250243), (98, 219601), (301, 71498), (602, 35749), (2107, 10214), (4214, 5107)]