20457008

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{8941}}^1$

素因数の和:8973

約数の個数: 40

約数和(自身を含む): 46569936

約数和(自身を除く): 26112928

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 143, 176, 208, 286, 572, 1144, 2288, 8941, 17882, 35764, 71528, 98351, 116233, 143056, 196702, 232466, 393404, 464932, 786808, 929864, 1278563, 1573616, 1859728, 2557126, 5114252, 10228504, 20457008]

約数ペア:

[(1, 20457008), (2, 10228504), (4, 5114252), (8, 2557126), (11, 1859728), (13, 1573616), (16, 1278563), (22, 929864), (26, 786808), (44, 464932), (52, 393404), (88, 232466), (104, 196702), (143, 143056), (176, 116233), (208, 98351), (286, 71528), (572, 35764), (1144, 17882), (2288, 8941)]