19809064

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{1381}}^1$

素因数の和:1561

約数の個数: 32

約数和(自身を含む): 40796640

約数和(自身を除く): 20987576

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 163, 326, 652, 1304, 1381, 1793, 2762, 3586, 5524, 7172, 11048, 14344, 15191, 30382, 60764, 121528, 225103, 450206, 900412, 1800824, 2476133, 4952266, 9904532, 19809064]

約数ペア:

[(1, 19809064), (2, 9904532), (4, 4952266), (8, 2476133), (11, 1800824), (22, 900412), (44, 450206), (88, 225103), (163, 121528), (326, 60764), (652, 30382), (1304, 15191), (1381, 14344), (1793, 11048), (2762, 7172), (3586, 5524)]