19989825

素因数分解:

$3^1\times 5^2\times {\mathrm{179}}^1\times {\mathrm{1489}}^1$

素因数の和:1681

約数の個数: 24

約数和(自身を含む): 33256800

約数和(自身を除く): 13266975

約数列:

[1, 3, 5, 15, 25, 75, 179, 537, 895, 1489, 2685, 4467, 4475, 7445, 13425, 22335, 37225, 111675, 266531, 799593, 1332655, 3997965, 6663275, 19989825]

約数ペア:

[(1, 19989825), (3, 6663275), (5, 3997965), (15, 1332655), (25, 799593), (75, 266531), (179, 111675), (537, 37225), (895, 22335), (1489, 13425), (2685, 7445), (4467, 4475)]