81821981577

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{491}}^1\times {\mathrm{1733}}^1$

素因数の和:2494

約数の個数: 64

約数和(自身を含む): 132132464640

約数和(自身を除く): 50310483063

約数列:

[1, 3, 7, 19, 21, 57, 133, 241, 399, 491, 723, 1473, 1687, 1733, 3437, 4579, 5061, 5199, 9329, 10311, 12131, 13737, 27987, 32053, 32927, 36393, 65303, 96159, 98781, 118331, 195909, 230489, 354993, 417653, 691467, 828317, 850903, 1252959, 2248289, 2484951, 2552709, 2923571, 5956321, 6744867, 7935407, 8770713, 15738023, 16167157, 17868963, 23806221, 47214069, 48501471, 55547849, 113170099, 166643547, 205067623, 339510297, 615202869, 1435473361, 3896284837, 4306420083, 11688854511, 27273993859, 81821981577]

約数ペア:

[(1, 81821981577), (3, 27273993859), (7, 11688854511), (19, 4306420083), (21, 3896284837), (57, 1435473361), (133, 615202869), (241, 339510297), (399, 205067623), (491, 166643547), (723, 113170099), (1473, 55547849), (1687, 48501471), (1733, 47214069), (3437, 23806221), (4579, 17868963), (5061, 16167157), (5199, 15738023), (9329, 8770713), (10311, 7935407), (12131, 6744867), (13737, 5956321), (27987, 2923571), (32053, 2552709), (32927, 2484951), (36393, 2248289), (65303, 1252959), (96159, 850903), (98781, 828317), (118331, 691467), (195909, 417653), (230489, 354993)]