21687028

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{3881}}^1$

素因数の和:4023

約数の個数: 24

約数和(自身を含む): 41739264

約数和(自身を除く): 20052236

約数列:

[1, 2, 4, 11, 22, 44, 127, 254, 508, 1397, 2794, 3881, 5588, 7762, 15524, 42691, 85382, 170764, 492887, 985774, 1971548, 5421757, 10843514, 21687028]

約数ペア:

[(1, 21687028), (2, 10843514), (4, 5421757), (11, 1971548), (22, 985774), (44, 492887), (127, 170764), (254, 85382), (508, 42691), (1397, 15524), (2794, 7762), (3881, 5588)]