20781588

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{42239}}^1$

素因数の和:42287

約数の個数: 24

約数和(自身を含む): 49674240

約数和(自身を除く): 28892652

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 123, 164, 246, 492, 42239, 84478, 126717, 168956, 253434, 506868, 1731799, 3463598, 5195397, 6927196, 10390794, 20781588]

約数ペア:

[(1, 20781588), (2, 10390794), (3, 6927196), (4, 5195397), (6, 3463598), (12, 1731799), (41, 506868), (82, 253434), (123, 168956), (164, 126717), (246, 84478), (492, 42239)]