19851040

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11279}}^1$

素因数の和:11305

約数の個数: 48

約数和(自身を含む): 51166080

約数和(自身を除く): 31315040

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11279, 22558, 45116, 56395, 90232, 112790, 124069, 180464, 225580, 248138, 360928, 451160, 496276, 620345, 902320, 992552, 1240690, 1804640, 1985104, 2481380, 3970208, 4962760, 9925520, 19851040]

約数ペア:

[(1, 19851040), (2, 9925520), (4, 4962760), (5, 3970208), (8, 2481380), (10, 1985104), (11, 1804640), (16, 1240690), (20, 992552), (22, 902320), (32, 620345), (40, 496276), (44, 451160), (55, 360928), (80, 248138), (88, 225580), (110, 180464), (160, 124069), (176, 112790), (220, 90232), (352, 56395), (440, 45116), (880, 22558), (1760, 11279)]