21457527

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1483}}^1$

素因数の和:1559

約数の個数: 32

約数和(自身を含む): 35900928

約数和(自身を除く): 14443401

約数列:

[1, 3, 7, 13, 21, 39, 53, 91, 159, 273, 371, 689, 1113, 1483, 2067, 4449, 4823, 10381, 14469, 19279, 31143, 57837, 78599, 134953, 235797, 404859, 550193, 1021787, 1650579, 3065361, 7152509, 21457527]

約数ペア:

[(1, 21457527), (3, 7152509), (7, 3065361), (13, 1650579), (21, 1021787), (39, 550193), (53, 404859), (91, 235797), (159, 134953), (273, 78599), (371, 57837), (689, 31143), (1113, 19279), (1483, 14469), (2067, 10381), (4449, 4823)]