21988422

素因数分解:

$2^1\times 3^4\times {\mathrm{135731}}^1$

素因数の和:135745

約数の個数: 20

約数和(自身を含む): 49270716

約数和(自身を除く): 27282294

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 135731, 271462, 407193, 814386, 1221579, 2443158, 3664737, 7329474, 10994211, 21988422]

約数ペア:

[(1, 21988422), (2, 10994211), (3, 7329474), (6, 3664737), (9, 2443158), (18, 1221579), (27, 814386), (54, 407193), (81, 271462), (162, 135731)]