20640144

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1307}}^1$

素因数の和:1372

約数の個数: 80

約数和(自身を含む): 62281728

約数和(自身を除く): 41641584

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 47, 48, 56, 84, 94, 112, 141, 168, 188, 282, 329, 336, 376, 564, 658, 752, 987, 1128, 1307, 1316, 1974, 2256, 2614, 2632, 3921, 3948, 5228, 5264, 7842, 7896, 9149, 10456, 15684, 15792, 18298, 20912, 27447, 31368, 36596, 54894, 61429, 62736, 73192, 109788, 122858, 146384, 184287, 219576, 245716, 368574, 430003, 439152, 491432, 737148, 860006, 982864, 1290009, 1474296, 1720012, 2580018, 2948592, 3440024, 5160036, 6880048, 10320072, 20640144]

約数ペア:

[(1, 20640144), (2, 10320072), (3, 6880048), (4, 5160036), (6, 3440024), (7, 2948592), (8, 2580018), (12, 1720012), (14, 1474296), (16, 1290009), (21, 982864), (24, 860006), (28, 737148), (42, 491432), (47, 439152), (48, 430003), (56, 368574), (84, 245716), (94, 219576), (112, 184287), (141, 146384), (168, 122858), (188, 109788), (282, 73192), (329, 62736), (336, 61429), (376, 54894), (564, 36596), (658, 31368), (752, 27447), (987, 20912), (1128, 18298), (1307, 15792), (1316, 15684), (1974, 10456), (2256, 9149), (2614, 7896), (2632, 7842), (3921, 5264), (3948, 5228)]