720804993

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1\times {\mathrm{307}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 997742592

約数和(自身を除く): 276937599

約数列:

[1, 3, 71, 73, 151, 213, 219, 307, 453, 921, 5183, 10721, 11023, 15549, 21797, 22411, 32163, 33069, 46357, 65391, 67233, 139071, 782633, 1591181, 2347899, 3291347, 3384061, 4773543, 9874041, 10152183, 240268331, 720804993]

約数ペア:

[(1, 720804993), (3, 240268331), (71, 10152183), (73, 9874041), (151, 4773543), (213, 3384061), (219, 3291347), (307, 2347899), (453, 1591181), (921, 782633), (5183, 139071), (10721, 67233), (11023, 65391), (15549, 46357), (21797, 33069), (22411, 32163)]