206428311

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{257}}^1\times {\mathrm{419}}^1$

素因数の和:756

約数の個数: 32

約数和(自身を含む): 312076800

約数和(自身を除く): 105648489

約数列:

[1, 3, 9, 27, 71, 213, 257, 419, 639, 771, 1257, 1917, 2313, 3771, 6939, 11313, 18247, 29749, 54741, 89247, 107683, 164223, 267741, 323049, 492669, 803223, 969147, 2907441, 7645493, 22936479, 68809437, 206428311]

約数ペア:

[(1, 206428311), (3, 68809437), (9, 22936479), (27, 7645493), (71, 2907441), (213, 969147), (257, 803223), (419, 492669), (639, 323049), (771, 267741), (1257, 164223), (1917, 107683), (2313, 89247), (3771, 54741), (6939, 29749), (11313, 18247)]