19870405280

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11290003}}^1$

素因数の和:11290029

約数の個数: 48

約数和(自身を含む): 51211458144

約数和(自身を除く): 31341052864

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, 11290003, 22580006, 45160012, 56450015, 90320024, 112900030, 124190033, 180640048, 225800060, 248380066, 361280096, 451600120, 496760132, 620950165, 903200240, 993520264, 1241900330, 1806400480, 1987040528, 2483800660, 3974081056, 4967601320, 9935202640, 19870405280]

約数ペア:

[(1, 19870405280), (2, 9935202640), (4, 4967601320), (5, 3974081056), (8, 2483800660), (10, 1987040528), (11, 1806400480), (16, 1241900330), (20, 993520264), (22, 903200240), (32, 620950165), (40, 496760132), (44, 451600120), (55, 361280096), (80, 248380066), (88, 225800060), (110, 180640048), (160, 124190033), (176, 112900030), (220, 90320024), (352, 56450015), (440, 45160012), (880, 22580006), (1760, 11290003)]