21682540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1471}}^1$

素因数の和:1558

約数の個数: 48

約数和(自身を含む): 50448384

約数和(自身を除く): 28765844

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 737, 1340, 1471, 1474, 2942, 2948, 3685, 5884, 7355, 7370, 14710, 14740, 16181, 29420, 32362, 64724, 80905, 98557, 161810, 197114, 323620, 394228, 492785, 985570, 1084127, 1971140, 2168254, 4336508, 5420635, 10841270, 21682540]

約数ペア:

[(1, 21682540), (2, 10841270), (4, 5420635), (5, 4336508), (10, 2168254), (11, 1971140), (20, 1084127), (22, 985570), (44, 492785), (55, 394228), (67, 323620), (110, 197114), (134, 161810), (220, 98557), (268, 80905), (335, 64724), (670, 32362), (737, 29420), (1340, 16181), (1471, 14740), (1474, 14710), (2942, 7370), (2948, 7355), (3685, 5884)]