20706080

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1019}}^1$

素因数の和:1161

約数の個数: 48

約数和(自身を含む): 49351680

約数和(自身を除く): 28645600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 1016, 1019, 1270, 2032, 2038, 2540, 4064, 4076, 5080, 5095, 8152, 10160, 10190, 16304, 20320, 20380, 32608, 40760, 81520, 129413, 163040, 258826, 517652, 647065, 1035304, 1294130, 2070608, 2588260, 4141216, 5176520, 10353040, 20706080]

約数ペア:

[(1, 20706080), (2, 10353040), (4, 5176520), (5, 4141216), (8, 2588260), (10, 2070608), (16, 1294130), (20, 1035304), (32, 647065), (40, 517652), (80, 258826), (127, 163040), (160, 129413), (254, 81520), (508, 40760), (635, 32608), (1016, 20380), (1019, 20320), (1270, 16304), (2032, 10190), (2038, 10160), (2540, 8152), (4064, 5095), (4076, 5080)]