19985321

素因数分解:

${\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:173

約数の個数: 24

約数和(自身を含む): 23042880

約数和(自身を除く): 3057559

約数列:

[1, 19, 23, 29, 83, 361, 437, 551, 667, 1577, 1909, 2407, 8303, 10469, 12673, 29963, 36271, 45733, 55361, 240787, 689149, 868927, 1051859, 19985321]

約数ペア:

[(1, 19985321), (19, 1051859), (23, 868927), (29, 689149), (83, 240787), (361, 55361), (437, 45733), (551, 36271), (667, 29963), (1577, 12673), (1909, 10469), (2407, 8303)]