40720239

素因数分解:

$3^5\times 7^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 71705088

約数和(自身を除く): 30984849

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 243, 259, 333, 567, 647, 777, 999, 1701, 1941, 2331, 2997, 4529, 5823, 6993, 8991, 13587, 17469, 20979, 23939, 40761, 52407, 62937, 71817, 122283, 157221, 167573, 215451, 366849, 502719, 646353, 1100547, 1508157, 1939059, 4524471, 5817177, 13573413, 40720239]

約数ペア:

[(1, 40720239), (3, 13573413), (7, 5817177), (9, 4524471), (21, 1939059), (27, 1508157), (37, 1100547), (63, 646353), (81, 502719), (111, 366849), (189, 215451), (243, 167573), (259, 157221), (333, 122283), (567, 71817), (647, 62937), (777, 52407), (999, 40761), (1701, 23939), (1941, 20979), (2331, 17469), (2997, 13587), (4529, 8991), (5823, 6993)]