20455864

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17881}}^1$

素因数の和:17911

約数の個数: 32

約数和(自身を含む): 45062640

約数和(自身を除く): 24606776

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 17881, 35762, 71524, 143048, 196691, 232453, 393382, 464906, 786764, 929812, 1573528, 1859624, 2556983, 5113966, 10227932, 20455864]

約数ペア:

[(1, 20455864), (2, 10227932), (4, 5113966), (8, 2556983), (11, 1859624), (13, 1573528), (22, 929812), (26, 786764), (44, 464906), (52, 393382), (88, 232453), (104, 196691), (143, 143048), (286, 71524), (572, 35762), (1144, 17881)]