19861520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1223}}^1$

素因数の和:1272

約数の個数: 80

約数和(自身を含む): 54639360

約数和(自身を除く): 34777840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 203, 232, 280, 290, 406, 464, 560, 580, 812, 1015, 1160, 1223, 1624, 2030, 2320, 2446, 3248, 4060, 4892, 6115, 8120, 8561, 9784, 12230, 16240, 17122, 19568, 24460, 34244, 35467, 42805, 48920, 68488, 70934, 85610, 97840, 136976, 141868, 171220, 177335, 248269, 283736, 342440, 354670, 496538, 567472, 684880, 709340, 993076, 1241345, 1418680, 1986152, 2482690, 2837360, 3972304, 4965380, 9930760, 19861520]

約数ペア:

[(1, 19861520), (2, 9930760), (4, 4965380), (5, 3972304), (7, 2837360), (8, 2482690), (10, 1986152), (14, 1418680), (16, 1241345), (20, 993076), (28, 709340), (29, 684880), (35, 567472), (40, 496538), (56, 354670), (58, 342440), (70, 283736), (80, 248269), (112, 177335), (116, 171220), (140, 141868), (145, 136976), (203, 97840), (232, 85610), (280, 70934), (290, 68488), (406, 48920), (464, 42805), (560, 35467), (580, 34244), (812, 24460), (1015, 19568), (1160, 17122), (1223, 16240), (1624, 12230), (2030, 9784), (2320, 8561), (2446, 8120), (3248, 6115), (4060, 4892)]