80771480

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{3121}}^1$

素因数の和:3779

約数の個数: 32

約数和(自身を含む): 182075040

約数和(自身を除く): 101303560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3121, 3235, 5176, 6242, 6470, 12484, 12940, 15605, 24968, 25880, 31210, 62420, 124840, 2019287, 4038574, 8077148, 10096435, 16154296, 20192870, 40385740, 80771480]

約数ペア:

[(1, 80771480), (2, 40385740), (4, 20192870), (5, 16154296), (8, 10096435), (10, 8077148), (20, 4038574), (40, 2019287), (647, 124840), (1294, 62420), (2588, 31210), (3121, 25880), (3235, 24968), (5176, 15605), (6242, 12940), (6470, 12484)]