19917860

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1187}}^1$

素因数の和:2035

約数の個数: 24

約数和(自身を含む): 41912640

約数和(自身を除く): 21994780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1187, 1678, 2374, 3356, 4195, 4748, 5935, 8390, 11870, 16780, 23740, 995893, 1991786, 3983572, 4979465, 9958930, 19917860]

約数ペア:

[(1, 19917860), (2, 9958930), (4, 4979465), (5, 3983572), (10, 1991786), (20, 995893), (839, 23740), (1187, 16780), (1678, 11870), (2374, 8390), (3356, 5935), (4195, 4748)]