21862275

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6779}}^1$

素因数の和:6835

約数の個数: 24

約数和(自身を含む): 36991680

約数和(自身を除く): 15129405

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6779, 20337, 33895, 101685, 169475, 291497, 508425, 874491, 1457485, 4372455, 7287425, 21862275]

約数ペア:

[(1, 21862275), (3, 7287425), (5, 4372455), (15, 1457485), (25, 874491), (43, 508425), (75, 291497), (129, 169475), (215, 101685), (645, 33895), (1075, 20337), (3225, 6779)]