13407820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 29338848

約数和(自身を除く): 15931028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 83, 164, 166, 197, 205, 332, 394, 410, 415, 788, 820, 830, 985, 1660, 1970, 3403, 3940, 6806, 8077, 13612, 16154, 16351, 17015, 32308, 32702, 34030, 40385, 65404, 68060, 80770, 81755, 161540, 163510, 327020, 670391, 1340782, 2681564, 3351955, 6703910, 13407820]

約数ペア:

[(1, 13407820), (2, 6703910), (4, 3351955), (5, 2681564), (10, 1340782), (20, 670391), (41, 327020), (82, 163510), (83, 161540), (164, 81755), (166, 80770), (197, 68060), (205, 65404), (332, 40385), (394, 34030), (410, 32702), (415, 32308), (788, 17015), (820, 16351), (830, 16154), (985, 13612), (1660, 8077), (1970, 6806), (3403, 3940)]