20350275

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1451}}^1$

素因数の和:1492

約数の個数: 48

約数和(自身を含む): 38890368

約数和(自身を除く): 18540093

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 165, 187, 255, 275, 425, 561, 825, 935, 1275, 1451, 2805, 4353, 4675, 7255, 14025, 15961, 21765, 24667, 36275, 47883, 74001, 79805, 108825, 123335, 239415, 271337, 370005, 399025, 616675, 814011, 1197075, 1356685, 1850025, 4070055, 6783425, 20350275]

約数ペア:

[(1, 20350275), (3, 6783425), (5, 4070055), (11, 1850025), (15, 1356685), (17, 1197075), (25, 814011), (33, 616675), (51, 399025), (55, 370005), (75, 271337), (85, 239415), (165, 123335), (187, 108825), (255, 79805), (275, 74001), (425, 47883), (561, 36275), (825, 24667), (935, 21765), (1275, 15961), (1451, 14025), (2805, 7255), (4353, 4675)]