19918360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:281

約数の個数: 128

約数和(自身を含む): 58060800

約数和(自身を除く): 38142440

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 29, 35, 40, 44, 55, 56, 58, 70, 77, 88, 110, 116, 140, 145, 154, 203, 220, 223, 232, 280, 290, 308, 319, 385, 406, 440, 446, 580, 616, 638, 770, 812, 892, 1015, 1115, 1160, 1276, 1540, 1561, 1595, 1624, 1784, 2030, 2230, 2233, 2453, 2552, 3080, 3122, 3190, 4060, 4460, 4466, 4906, 6244, 6380, 6467, 7805, 8120, 8920, 8932, 9812, 11165, 12265, 12488, 12760, 12934, 15610, 17171, 17864, 19624, 22330, 24530, 25868, 31220, 32335, 34342, 44660, 45269, 49060, 51736, 62440, 64670, 68684, 71137, 85855, 89320, 90538, 98120, 129340, 137368, 142274, 171710, 181076, 226345, 258680, 284548, 343420, 355685, 362152, 452690, 497959, 569096, 686840, 711370, 905380, 995918, 1422740, 1810760, 1991836, 2489795, 2845480, 3983672, 4979590, 9959180, 19918360]

約数ペア:

[(1, 19918360), (2, 9959180), (4, 4979590), (5, 3983672), (7, 2845480), (8, 2489795), (10, 1991836), (11, 1810760), (14, 1422740), (20, 995918), (22, 905380), (28, 711370), (29, 686840), (35, 569096), (40, 497959), (44, 452690), (55, 362152), (56, 355685), (58, 343420), (70, 284548), (77, 258680), (88, 226345), (110, 181076), (116, 171710), (140, 142274), (145, 137368), (154, 129340), (203, 98120), (220, 90538), (223, 89320), (232, 85855), (280, 71137), (290, 68684), (308, 64670), (319, 62440), (385, 51736), (406, 49060), (440, 45269), (446, 44660), (580, 34342), (616, 32335), (638, 31220), (770, 25868), (812, 24530), (892, 22330), (1015, 19624), (1115, 17864), (1160, 17171), (1276, 15610), (1540, 12934), (1561, 12760), (1595, 12488), (1624, 12265), (1784, 11165), (2030, 9812), (2230, 8932), (2233, 8920), (2453, 8120), (2552, 7805), (3080, 6467), (3122, 6380), (3190, 6244), (4060, 4906), (4460, 4466)]