81409724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{20789}}^1$

素因数の和:20893

約数の個数: 24

約数和(自身を含む): 157172400

約数和(自身を除く): 75762676

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 20789, 41578, 83156, 228679, 457358, 914716, 1850221, 3700442, 7400884, 20352431, 40704862, 81409724]

約数ペア:

[(1, 81409724), (2, 40704862), (4, 20352431), (11, 7400884), (22, 3700442), (44, 1850221), (89, 914716), (178, 457358), (356, 228679), (979, 83156), (1958, 41578), (3916, 20789)]