20905520

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{9011}}^1$

素因数の和:9053

約数の個数: 40

約数和(自身を含む): 50286960

約数和(自身を除く): 29381440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 9011, 18022, 36044, 45055, 72088, 90110, 144176, 180220, 261319, 360440, 522638, 720880, 1045276, 1306595, 2090552, 2613190, 4181104, 5226380, 10452760, 20905520]

約数ペア:

[(1, 20905520), (2, 10452760), (4, 5226380), (5, 4181104), (8, 2613190), (10, 2090552), (16, 1306595), (20, 1045276), (29, 720880), (40, 522638), (58, 360440), (80, 261319), (116, 180220), (145, 144176), (232, 90110), (290, 72088), (464, 45055), (580, 36044), (1160, 18022), (2320, 9011)]