521255553

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{277}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 880276992

約数和(自身を除く): 359021439

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 113, 183, 273, 277, 339, 427, 791, 793, 831, 1281, 1469, 1939, 2373, 2379, 3601, 4407, 5551, 5817, 6893, 10283, 10803, 16653, 16897, 20679, 25207, 30849, 31301, 48251, 50691, 75621, 89609, 93903, 118279, 144753, 219107, 219661, 268827, 354837, 406913, 627263, 657321, 658983, 1220739, 1537627, 1881789, 1909361, 2848391, 4612881, 5728083, 8545173, 13365527, 24821693, 40096581, 74465079, 173751851, 521255553]

約数ペア:

[(1, 521255553), (3, 173751851), (7, 74465079), (13, 40096581), (21, 24821693), (39, 13365527), (61, 8545173), (91, 5728083), (113, 4612881), (183, 2848391), (273, 1909361), (277, 1881789), (339, 1537627), (427, 1220739), (791, 658983), (793, 657321), (831, 627263), (1281, 406913), (1469, 354837), (1939, 268827), (2373, 219661), (2379, 219107), (3601, 144753), (4407, 118279), (5551, 93903), (5817, 89609), (6893, 75621), (10283, 50691), (10803, 48251), (16653, 31301), (16897, 30849), (20679, 25207)]