20914725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1129}}^1$

素因数の和:1174

約数の個数: 48

約数和(自身を含む): 39233600

約数和(自身を除く): 18318875

約数列:

[1, 3, 5, 13, 15, 19, 25, 39, 57, 65, 75, 95, 195, 247, 285, 325, 475, 741, 975, 1129, 1235, 1425, 3387, 3705, 5645, 6175, 14677, 16935, 18525, 21451, 28225, 44031, 64353, 73385, 84675, 107255, 220155, 278863, 321765, 366925, 536275, 836589, 1100775, 1394315, 1608825, 4182945, 6971575, 20914725]

約数ペア:

[(1, 20914725), (3, 6971575), (5, 4182945), (13, 1608825), (15, 1394315), (19, 1100775), (25, 836589), (39, 536275), (57, 366925), (65, 321765), (75, 278863), (95, 220155), (195, 107255), (247, 84675), (285, 73385), (325, 64353), (475, 44031), (741, 28225), (975, 21451), (1129, 18525), (1235, 16935), (1425, 14677), (3387, 6175), (3705, 5645)]