19908190

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{647}}^1$

素因数の和:852

約数の個数: 32

約数和(自身を含む): 38211264

約数和(自身を除く): 18303074

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 181, 362, 647, 905, 1294, 1810, 3077, 3235, 6154, 6470, 10999, 15385, 21998, 30770, 54995, 109990, 117107, 234214, 585535, 1171070, 1990819, 3981638, 9954095, 19908190]

約数ペア:

[(1, 19908190), (2, 9954095), (5, 3981638), (10, 1990819), (17, 1171070), (34, 585535), (85, 234214), (170, 117107), (181, 109990), (362, 54995), (647, 30770), (905, 21998), (1294, 15385), (1810, 10999), (3077, 6470), (3235, 6154)]