1388552720

素因数分解:

$2^4\times 5^1\times {\mathrm{17356909}}^1$

素因数の和:17356922

約数の個数: 20

約数和(自身を含む): 3228385260

約数和(自身を除く): 1839832540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 17356909, 34713818, 69427636, 86784545, 138855272, 173569090, 277710544, 347138180, 694276360, 1388552720]

約数ペア:

[(1, 1388552720), (2, 694276360), (4, 347138180), (5, 277710544), (8, 173569090), (10, 138855272), (16, 86784545), (20, 69427636), (40, 34713818), (80, 17356909)]