21518380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82763}}^1$

素因数の和:82785

約数の個数: 24

約数和(自身を含む): 48665232

約数和(自身を除く): 27146852

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82763, 165526, 331052, 413815, 827630, 1075919, 1655260, 2151838, 4303676, 5379595, 10759190, 21518380]

約数ペア:

[(1, 21518380), (2, 10759190), (4, 5379595), (5, 4303676), (10, 2151838), (13, 1655260), (20, 1075919), (26, 827630), (52, 413815), (65, 331052), (130, 165526), (260, 82763)]