28199920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1361}}^1$

素因数の和:1418

約数の個数: 80

約数和(自身を含む): 77012928

約数和(自身を除く): 48813008

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 296, 370, 518, 560, 592, 740, 1036, 1295, 1361, 1480, 2072, 2590, 2722, 2960, 4144, 5180, 5444, 6805, 9527, 10360, 10888, 13610, 19054, 20720, 21776, 27220, 38108, 47635, 50357, 54440, 76216, 95270, 100714, 108880, 152432, 190540, 201428, 251785, 352499, 381080, 402856, 503570, 704998, 762160, 805712, 1007140, 1409996, 1762495, 2014280, 2819992, 3524990, 4028560, 5639984, 7049980, 14099960, 28199920]

約数ペア:

[(1, 28199920), (2, 14099960), (4, 7049980), (5, 5639984), (7, 4028560), (8, 3524990), (10, 2819992), (14, 2014280), (16, 1762495), (20, 1409996), (28, 1007140), (35, 805712), (37, 762160), (40, 704998), (56, 503570), (70, 402856), (74, 381080), (80, 352499), (112, 251785), (140, 201428), (148, 190540), (185, 152432), (259, 108880), (280, 100714), (296, 95270), (370, 76216), (518, 54440), (560, 50357), (592, 47635), (740, 38108), (1036, 27220), (1295, 21776), (1361, 20720), (1480, 19054), (2072, 13610), (2590, 10888), (2722, 10360), (2960, 9527), (4144, 6805), (5180, 5444)]