255289437

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{3301}}^1$

素因数の和:3981

約数の個数: 24

約数和(自身を含む): 397838168

約数和(自身を除く): 142548731

約数列:

[1, 3, 9, 13, 39, 117, 661, 1983, 3301, 5949, 8593, 9903, 25779, 29709, 42913, 77337, 128739, 386217, 2181961, 6545883, 19637649, 28365493, 85096479, 255289437]

約数ペア:

[(1, 255289437), (3, 85096479), (9, 28365493), (13, 19637649), (39, 6545883), (117, 2181961), (661, 386217), (1983, 128739), (3301, 77337), (5949, 42913), (8593, 29709), (9903, 25779)]