66816988

素因数分解:

$2^2\times 7^2\times {\mathrm{340903}}^1$

素因数の和:340921

約数の個数: 18

約数和(自身を含む): 136020696

約数和(自身を除く): 69203708

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 340903, 681806, 1363612, 2386321, 4772642, 9545284, 16704247, 33408494, 66816988]

約数ペア:

[(1, 66816988), (2, 33408494), (4, 16704247), (7, 9545284), (14, 4772642), (28, 2386321), (49, 1363612), (98, 681806), (196, 340903)]