20290459

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:283

約数の個数: 24

約数和(自身を含む): 24829200

約数和(自身を除く): 4538741

約数列:

[1, 7, 29, 49, 109, 131, 203, 763, 917, 1421, 3161, 3799, 5341, 6419, 14279, 22127, 26593, 99953, 154889, 186151, 414091, 699671, 2898637, 20290459]

約数ペア:

[(1, 20290459), (7, 2898637), (29, 699671), (49, 414091), (109, 186151), (131, 154889), (203, 99953), (763, 26593), (917, 22127), (1421, 14279), (3161, 6419), (3799, 5341)]