18972470

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{7499}}^1$

素因数の和:7540

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 19907530

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 7499, 14998, 37495, 74990, 82489, 164978, 172477, 344954, 412445, 824890, 862385, 1724770, 1897247, 3794494, 9486235, 18972470]

約数ペア:

[(1, 18972470), (2, 9486235), (5, 3794494), (10, 1897247), (11, 1724770), (22, 862385), (23, 824890), (46, 412445), (55, 344954), (110, 172477), (115, 164978), (230, 82489), (253, 74990), (506, 37495), (1265, 14998), (2530, 7499)]