20819980

素因数分解:

$2^2\times 5^1\times {\mathrm{877}}^1\times {\mathrm{1187}}^1$

素因数の和:2073

約数の個数: 24

約数和(自身を含む): 43808688

約数和(自身を除く): 22988708

約数列:

[1, 2, 4, 5, 10, 20, 877, 1187, 1754, 2374, 3508, 4385, 4748, 5935, 8770, 11870, 17540, 23740, 1040999, 2081998, 4163996, 5204995, 10409990, 20819980]

約数ペア:

[(1, 20819980), (2, 10409990), (4, 5204995), (5, 4163996), (10, 2081998), (20, 1040999), (877, 23740), (1187, 17540), (1754, 11870), (2374, 8770), (3508, 5935), (4385, 4748)]