20778340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{94447}}^1$

素因数の和:94467

約数の個数: 24

約数和(自身を含む): 47601792

約数和(自身を除く): 26823452

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 94447, 188894, 377788, 472235, 944470, 1038917, 1888940, 2077834, 4155668, 5194585, 10389170, 20778340]

約数ペア:

[(1, 20778340), (2, 10389170), (4, 5194585), (5, 4155668), (10, 2077834), (11, 1888940), (20, 1038917), (22, 944470), (44, 472235), (55, 377788), (110, 188894), (220, 94447)]