18717808

素因数分解:

$2^4\times {\mathrm{691}}^1\times {\mathrm{1693}}^1$

素因数の和:2392

約数の個数: 20

約数和(自身を含む): 36339688

約数和(自身を除く): 17621880

約数列:

[1, 2, 4, 8, 16, 691, 1382, 1693, 2764, 3386, 5528, 6772, 11056, 13544, 27088, 1169863, 2339726, 4679452, 9358904, 18717808]

約数ペア:

[(1, 18717808), (2, 9358904), (4, 4679452), (8, 2339726), (16, 1169863), (691, 27088), (1382, 13544), (1693, 11056), (2764, 6772), (3386, 5528)]