257996984

素因数分解:

$2^3\times 7^1\times {\mathrm{401}}^1\times {\mathrm{11489}}^1$

素因数の和:11903

約数の個数: 32

約数和(自身を含む): 554277600

約数和(自身を除く): 296280616

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 401, 802, 1604, 2807, 3208, 5614, 11228, 11489, 22456, 22978, 45956, 80423, 91912, 160846, 321692, 643384, 4607089, 9214178, 18428356, 32249623, 36856712, 64499246, 128998492, 257996984]

約数ペア:

[(1, 257996984), (2, 128998492), (4, 64499246), (7, 36856712), (8, 32249623), (14, 18428356), (28, 9214178), (56, 4607089), (401, 643384), (802, 321692), (1604, 160846), (2807, 91912), (3208, 80423), (5614, 45956), (11228, 22978), (11489, 22456)]