20662418

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:231

約数の個数: 48

約数和(自身を含む): 38413440

約数和(自身を除く): 17751022

約数列:

[1, 2, 7, 14, 23, 46, 49, 89, 98, 103, 161, 178, 206, 322, 623, 721, 1127, 1246, 1442, 2047, 2254, 2369, 4094, 4361, 4738, 5047, 8722, 9167, 10094, 14329, 16583, 18334, 28658, 33166, 64169, 100303, 116081, 128338, 200606, 210841, 232162, 421682, 449183, 898366, 1475887, 2951774, 10331209, 20662418]

約数ペア:

[(1, 20662418), (2, 10331209), (7, 2951774), (14, 1475887), (23, 898366), (46, 449183), (49, 421682), (89, 232162), (98, 210841), (103, 200606), (161, 128338), (178, 116081), (206, 100303), (322, 64169), (623, 33166), (721, 28658), (1127, 18334), (1246, 16583), (1442, 14329), (2047, 10094), (2254, 9167), (2369, 8722), (4094, 5047), (4361, 4738)]