18897321

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1\times {\mathrm{641}}^1$

素因数の和:992

約数の個数: 16

約数和(自身を含む): 26131968

約数和(自身を除く): 7234647

約数列:

[1, 3, 31, 93, 317, 641, 951, 1923, 9827, 19871, 29481, 59613, 203197, 609591, 6299107, 18897321]

約数ペア:

[(1, 18897321), (3, 6299107), (31, 609591), (93, 203197), (317, 59613), (641, 29481), (951, 19871), (1923, 9827)]