21816918

素因数分解:

$2^1\times 3^3\times {\mathrm{404017}}^1$

素因数の和:404028

約数の個数: 16

約数和(自身を含む): 48482160

約数和(自身を除く): 26665242

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 404017, 808034, 1212051, 2424102, 3636153, 7272306, 10908459, 21816918]

約数ペア:

[(1, 21816918), (2, 10908459), (3, 7272306), (6, 3636153), (9, 2424102), (18, 1212051), (27, 808034), (54, 404017)]