20389970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{433}}^1$

素因数の和:734

約数の個数: 32

約数和(自身を含む): 39091248

約数和(自身を除く): 18701278

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 277, 433, 554, 866, 1385, 2165, 2770, 4330, 4709, 7361, 9418, 14722, 23545, 36805, 47090, 73610, 119941, 239882, 599705, 1199410, 2038997, 4077994, 10194985, 20389970]

約数ペア:

[(1, 20389970), (2, 10194985), (5, 4077994), (10, 2038997), (17, 1199410), (34, 599705), (85, 239882), (170, 119941), (277, 73610), (433, 47090), (554, 36805), (866, 23545), (1385, 14722), (2165, 9418), (2770, 7361), (4330, 4709)]