20866731

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{7789}}^1$

素因数の和:7858

約数の個数: 16

約数和(自身を含む): 29913600

約数和(自身を除く): 9046869

約数列:

[1, 3, 19, 47, 57, 141, 893, 2679, 7789, 23367, 147991, 366083, 443973, 1098249, 6955577, 20866731]

約数ペア:

[(1, 20866731), (3, 6955577), (19, 1098249), (47, 443973), (57, 366083), (141, 147991), (893, 23367), (2679, 7789)]