20780181356

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{271}}^1\times {\mathrm{158429}}^1$

素因数の和:158726

約数の個数: 36

約数和(自身を含む): 40119545760

約数和(自身を除く): 19339364404

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 271, 484, 542, 1084, 2981, 5962, 11924, 32791, 65582, 131164, 158429, 316858, 633716, 1742719, 3485438, 6970876, 19169909, 38339818, 42934259, 76679636, 85868518, 171737036, 472276849, 944553698, 1889107396, 5195045339, 10390090678, 20780181356]

約数ペア:

[(1, 20780181356), (2, 10390090678), (4, 5195045339), (11, 1889107396), (22, 944553698), (44, 472276849), (121, 171737036), (242, 85868518), (271, 76679636), (484, 42934259), (542, 38339818), (1084, 19169909), (2981, 6970876), (5962, 3485438), (11924, 1742719), (32791, 633716), (65582, 316858), (131164, 158429)]