20890060

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17123}}^1$

素因数の和:17193

約数の個数: 24

約数和(自身を含む): 44590896

約数和(自身を除く): 23700836

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17123, 34246, 68492, 85615, 171230, 342460, 1044503, 2089006, 4178012, 5222515, 10445030, 20890060]

約数ペア:

[(1, 20890060), (2, 10445030), (4, 5222515), (5, 4178012), (10, 2089006), (20, 1044503), (61, 342460), (122, 171230), (244, 85615), (305, 68492), (610, 34246), (1220, 17123)]