19509728

素因数分解:

$2^5\times 7^1\times {\mathrm{251}}^1\times {\mathrm{347}}^1$

素因数の和:615

約数の個数: 48

約数和(自身を含む): 44198784

約数和(自身を除く): 24689056

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 251, 347, 502, 694, 1004, 1388, 1757, 2008, 2429, 2776, 3514, 4016, 4858, 5552, 7028, 8032, 9716, 11104, 14056, 19432, 28112, 38864, 56224, 77728, 87097, 174194, 348388, 609679, 696776, 1219358, 1393552, 2438716, 2787104, 4877432, 9754864, 19509728]

約数ペア:

[(1, 19509728), (2, 9754864), (4, 4877432), (7, 2787104), (8, 2438716), (14, 1393552), (16, 1219358), (28, 696776), (32, 609679), (56, 348388), (112, 174194), (224, 87097), (251, 77728), (347, 56224), (502, 38864), (694, 28112), (1004, 19432), (1388, 14056), (1757, 11104), (2008, 9716), (2429, 8032), (2776, 7028), (3514, 5552), (4016, 4858)]