256887818

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1\times {\mathrm{787}}^1$

素因数の和:1238

約数の個数: 32

約数和(自身を含む): 433349568

約数和(自身を除く): 176461750

約数列:

[1, 2, 11, 22, 37, 74, 401, 407, 787, 802, 814, 1574, 4411, 8657, 8822, 14837, 17314, 29119, 29674, 58238, 163207, 315587, 320309, 326414, 631174, 640618, 3471457, 6942914, 11676719, 23353438, 128443909, 256887818]

約数ペア:

[(1, 256887818), (2, 128443909), (11, 23353438), (22, 11676719), (37, 6942914), (74, 3471457), (401, 640618), (407, 631174), (787, 326414), (802, 320309), (814, 315587), (1574, 163207), (4411, 58238), (8657, 29674), (8822, 29119), (14837, 17314)]