18991852

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{653}}^1\times {\mathrm{661}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 36367632

約数和(自身を除く): 17375780

約数列:

[1, 2, 4, 11, 22, 44, 653, 661, 1306, 1322, 2612, 2644, 7183, 7271, 14366, 14542, 28732, 29084, 431633, 863266, 1726532, 4747963, 9495926, 18991852]

約数ペア:

[(1, 18991852), (2, 9495926), (4, 4747963), (11, 1726532), (22, 863266), (44, 431633), (653, 29084), (661, 28732), (1306, 14542), (1322, 14366), (2612, 7271), (2644, 7183)]