18282380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10271}}^1$

素因数の和:10369

約数の個数: 24

約数和(自身を含む): 38828160

約数和(自身を除く): 20545780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10271, 20542, 41084, 51355, 102710, 205420, 914119, 1828238, 3656476, 4570595, 9141190, 18282380]

約数ペア:

[(1, 18282380), (2, 9141190), (4, 4570595), (5, 3656476), (10, 1828238), (20, 914119), (89, 205420), (178, 102710), (356, 51355), (445, 41084), (890, 20542), (1780, 10271)]