280808619

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1259}}^1$

素因数の和:1344

約数の個数: 64

約数和(自身を含む): 496742400

約数和(自身を除く): 215933781

約数列:

[1, 3, 7, 13, 19, 21, 39, 43, 57, 91, 129, 133, 247, 273, 301, 399, 559, 741, 817, 903, 1259, 1677, 1729, 2451, 3777, 3913, 5187, 5719, 8813, 10621, 11739, 16367, 17157, 23921, 26439, 31863, 49101, 54137, 71763, 74347, 114569, 162411, 167447, 223041, 310973, 343707, 378959, 502341, 703781, 932919, 1028603, 1136877, 2111343, 2176811, 3085809, 4926467, 6530433, 7200221, 13371839, 14779401, 21600663, 40115517, 93602873, 280808619]

約数ペア:

[(1, 280808619), (3, 93602873), (7, 40115517), (13, 21600663), (19, 14779401), (21, 13371839), (39, 7200221), (43, 6530433), (57, 4926467), (91, 3085809), (129, 2176811), (133, 2111343), (247, 1136877), (273, 1028603), (301, 932919), (399, 703781), (559, 502341), (741, 378959), (817, 343707), (903, 310973), (1259, 223041), (1677, 167447), (1729, 162411), (2451, 114569), (3777, 74347), (3913, 71763), (5187, 54137), (5719, 49101), (8813, 31863), (10621, 26439), (11739, 23921), (16367, 17157)]