20815564

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3557}}^1$

素因数の和:3598

約数の個数: 48

約数和(自身を含む): 47819520

約数和(自身を除く): 27003956

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 133, 154, 209, 266, 308, 418, 532, 836, 1463, 2926, 3557, 5852, 7114, 14228, 24899, 39127, 49798, 67583, 78254, 99596, 135166, 156508, 270332, 273889, 473081, 547778, 743413, 946162, 1095556, 1486826, 1892324, 2973652, 5203891, 10407782, 20815564]

約数ペア:

[(1, 20815564), (2, 10407782), (4, 5203891), (7, 2973652), (11, 1892324), (14, 1486826), (19, 1095556), (22, 946162), (28, 743413), (38, 547778), (44, 473081), (76, 273889), (77, 270332), (133, 156508), (154, 135166), (209, 99596), (266, 78254), (308, 67583), (418, 49798), (532, 39127), (836, 24899), (1463, 14228), (2926, 7114), (3557, 5852)]