20125640

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{1493}}^1$

素因数の和:1841

約数の個数: 32

約数和(自身を含む): 45447480

約数和(自身を除く): 25321840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1493, 1685, 2696, 2986, 3370, 5972, 6740, 7465, 11944, 13480, 14930, 29860, 59720, 503141, 1006282, 2012564, 2515705, 4025128, 5031410, 10062820, 20125640]

約数ペア:

[(1, 20125640), (2, 10062820), (4, 5031410), (5, 4025128), (8, 2515705), (10, 2012564), (20, 1006282), (40, 503141), (337, 59720), (674, 29860), (1348, 14930), (1493, 13480), (1685, 11944), (2696, 7465), (2986, 6740), (3370, 5972)]