678742467

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1\times {\mathrm{727}}^1$

素因数の和:1427

約数の個数: 32

約数和(自身を含む): 1003871232

約数和(自身を除く): 325128765

約数列:

[1, 3, 13, 37, 39, 111, 481, 647, 727, 1443, 1941, 2181, 8411, 9451, 23939, 25233, 26899, 28353, 71817, 80697, 311207, 349687, 470369, 933621, 1049061, 1411107, 6114797, 17403653, 18344391, 52210959, 226247489, 678742467]

約数ペア:

[(1, 678742467), (3, 226247489), (13, 52210959), (37, 18344391), (39, 17403653), (111, 6114797), (481, 1411107), (647, 1049061), (727, 933621), (1443, 470369), (1941, 349687), (2181, 311207), (8411, 80697), (9451, 71817), (23939, 28353), (25233, 26899)]