19992506

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:246

約数の個数: 32

約数和(自身を含む): 32343168

約数和(自身を除く): 12350662

約数列:

[1, 2, 37, 43, 61, 74, 86, 103, 122, 206, 1591, 2257, 2623, 3182, 3811, 4429, 4514, 5246, 6283, 7622, 8858, 12566, 97051, 163873, 194102, 232471, 270169, 327746, 464942, 540338, 9996253, 19992506]

約数ペア:

[(1, 19992506), (2, 9996253), (37, 540338), (43, 464942), (61, 327746), (74, 270169), (86, 232471), (103, 194102), (122, 163873), (206, 97051), (1591, 12566), (2257, 8858), (2623, 7622), (3182, 6283), (3811, 5246), (4429, 4514)]