20992892

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{2221}}^1$

素因数の和:2381

約数の個数: 24

約数和(自身を含む): 39196080

約数和(自身を除く): 18203188

約数列:

[1, 2, 4, 17, 34, 68, 139, 278, 556, 2221, 2363, 4442, 4726, 8884, 9452, 37757, 75514, 151028, 308719, 617438, 1234876, 5248223, 10496446, 20992892]

約数ペア:

[(1, 20992892), (2, 10496446), (4, 5248223), (17, 1234876), (34, 617438), (68, 308719), (139, 151028), (278, 75514), (556, 37757), (2221, 9452), (2363, 8884), (4442, 4726)]