1278713504

素因数分解:

$2^5\times {\mathrm{157}}^1\times {\mathrm{199}}^1\times {\mathrm{1279}}^1$

素因数の和:1645

約数の個数: 48

約数和(自身を含む): 2548224000

約数和(自身を除く): 1269510496

約数列:

[1, 2, 4, 8, 16, 32, 157, 199, 314, 398, 628, 796, 1256, 1279, 1592, 2512, 2558, 3184, 5024, 5116, 6368, 10232, 20464, 31243, 40928, 62486, 124972, 200803, 249944, 254521, 401606, 499888, 509042, 803212, 999776, 1018084, 1606424, 2036168, 3212848, 4072336, 6425696, 8144672, 39959797, 79919594, 159839188, 319678376, 639356752, 1278713504]

約数ペア:

[(1, 1278713504), (2, 639356752), (4, 319678376), (8, 159839188), (16, 79919594), (32, 39959797), (157, 8144672), (199, 6425696), (314, 4072336), (398, 3212848), (628, 2036168), (796, 1606424), (1256, 1018084), (1279, 999776), (1592, 803212), (2512, 509042), (2558, 499888), (3184, 401606), (5024, 254521), (5116, 249944), (6368, 200803), (10232, 124972), (20464, 62486), (31243, 40928)]