20497768

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{28789}}^1$

素因数の和:28884

約数の個数: 16

約数和(自身を含む): 38866500

約数和(自身を除く): 18368732

約数列:

[1, 2, 4, 8, 89, 178, 356, 712, 28789, 57578, 115156, 230312, 2562221, 5124442, 10248884, 20497768]

約数ペア:

[(1, 20497768), (2, 10248884), (4, 5124442), (8, 2562221), (89, 230312), (178, 115156), (356, 57578), (712, 28789)]