21880156

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{4073}}^1$

素因数の和:4173

約数の個数: 24

約数和(自身を含む): 41065920

約数和(自身を除く): 19185764

約数列:

[1, 2, 4, 17, 34, 68, 79, 158, 316, 1343, 2686, 4073, 5372, 8146, 16292, 69241, 138482, 276964, 321767, 643534, 1287068, 5470039, 10940078, 21880156]

約数ペア:

[(1, 21880156), (2, 10940078), (4, 5470039), (17, 1287068), (34, 643534), (68, 321767), (79, 276964), (158, 138482), (316, 69241), (1343, 16292), (2686, 8146), (4073, 5372)]