28715120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1091}}^1$

素因数の和:1158

約数の個数: 80

約数和(自身を含む): 77995008

約数和(自身を除く): 49279888

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 56, 70, 80, 94, 112, 140, 188, 235, 280, 329, 376, 470, 560, 658, 752, 940, 1091, 1316, 1645, 1880, 2182, 2632, 3290, 3760, 4364, 5264, 5455, 6580, 7637, 8728, 10910, 13160, 15274, 17456, 21820, 26320, 30548, 38185, 43640, 51277, 61096, 76370, 87280, 102554, 122192, 152740, 205108, 256385, 305480, 358939, 410216, 512770, 610960, 717878, 820432, 1025540, 1435756, 1794695, 2051080, 2871512, 3589390, 4102160, 5743024, 7178780, 14357560, 28715120]

約数ペア:

[(1, 28715120), (2, 14357560), (4, 7178780), (5, 5743024), (7, 4102160), (8, 3589390), (10, 2871512), (14, 2051080), (16, 1794695), (20, 1435756), (28, 1025540), (35, 820432), (40, 717878), (47, 610960), (56, 512770), (70, 410216), (80, 358939), (94, 305480), (112, 256385), (140, 205108), (188, 152740), (235, 122192), (280, 102554), (329, 87280), (376, 76370), (470, 61096), (560, 51277), (658, 43640), (752, 38185), (940, 30548), (1091, 26320), (1316, 21820), (1645, 17456), (1880, 15274), (2182, 13160), (2632, 10910), (3290, 8728), (3760, 7637), (4364, 6580), (5264, 5455)]