21722690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197479}}^1$

素因数の和:197497

約数の個数: 16

約数和(自身を含む): 42655680

約数和(自身を除く): 20932990

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197479, 394958, 987395, 1974790, 2172269, 4344538, 10861345, 21722690]

約数ペア:

[(1, 21722690), (2, 10861345), (5, 4344538), (10, 2172269), (11, 1974790), (22, 987395), (55, 394958), (110, 197479)]