20766080

素因数分解:

$2^7\times 5^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:547

約数の個数: 64

約数和(自身を含む): 50453280

約数和(自身を除く): 29687200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 284, 320, 355, 457, 568, 640, 710, 914, 1136, 1420, 1828, 2272, 2285, 2840, 3656, 4544, 4570, 5680, 7312, 9088, 9140, 11360, 14624, 18280, 22720, 29248, 32447, 36560, 45440, 58496, 64894, 73120, 129788, 146240, 162235, 259576, 292480, 324470, 519152, 648940, 1038304, 1297880, 2076608, 2595760, 4153216, 5191520, 10383040, 20766080]

約数ペア:

[(1, 20766080), (2, 10383040), (4, 5191520), (5, 4153216), (8, 2595760), (10, 2076608), (16, 1297880), (20, 1038304), (32, 648940), (40, 519152), (64, 324470), (71, 292480), (80, 259576), (128, 162235), (142, 146240), (160, 129788), (284, 73120), (320, 64894), (355, 58496), (457, 45440), (568, 36560), (640, 32447), (710, 29248), (914, 22720), (1136, 18280), (1420, 14624), (1828, 11360), (2272, 9140), (2285, 9088), (2840, 7312), (3656, 5680), (4544, 4570)]