18920380

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{3769}}^1$

素因数の和:4029

約数の個数: 24

約数和(自身を含む): 39901680

約数和(自身を除く): 20981300

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 3769, 5020, 7538, 15076, 18845, 37690, 75380, 946019, 1892038, 3784076, 4730095, 9460190, 18920380]

約数ペア:

[(1, 18920380), (2, 9460190), (4, 4730095), (5, 3784076), (10, 1892038), (20, 946019), (251, 75380), (502, 37690), (1004, 18845), (1255, 15076), (2510, 7538), (3769, 5020)]