720013775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 984145344

約数和(自身を除く): 264131569

約数列:

[1, 5, 13, 25, 65, 103, 137, 157, 325, 515, 685, 785, 1339, 1781, 2041, 2575, 3425, 3925, 6695, 8905, 10205, 14111, 16171, 21509, 33475, 44525, 51025, 70555, 80855, 107545, 183443, 210223, 279617, 352775, 404275, 537725, 917215, 1051115, 1398085, 2215427, 4586075, 5255575, 6990425, 11077135, 28800551, 55385675, 144002755, 720013775]

約数ペア:

[(1, 720013775), (5, 144002755), (13, 55385675), (25, 28800551), (65, 11077135), (103, 6990425), (137, 5255575), (157, 4586075), (325, 2215427), (515, 1398085), (685, 1051115), (785, 917215), (1339, 537725), (1781, 404275), (2041, 352775), (2575, 279617), (3425, 210223), (3925, 183443), (6695, 107545), (8905, 80855), (10205, 70555), (14111, 51025), (16171, 44525), (21509, 33475)]