20066420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{463}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 46303488

約数和(自身を除く): 26237068

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 197, 220, 394, 463, 788, 926, 985, 1852, 1970, 2167, 2315, 3940, 4334, 4630, 5093, 8668, 9260, 10186, 10835, 20372, 21670, 25465, 43340, 50930, 91211, 101860, 182422, 364844, 456055, 912110, 1003321, 1824220, 2006642, 4013284, 5016605, 10033210, 20066420]

約数ペア:

[(1, 20066420), (2, 10033210), (4, 5016605), (5, 4013284), (10, 2006642), (11, 1824220), (20, 1003321), (22, 912110), (44, 456055), (55, 364844), (110, 182422), (197, 101860), (220, 91211), (394, 50930), (463, 43340), (788, 25465), (926, 21670), (985, 20372), (1852, 10835), (1970, 10186), (2167, 9260), (2315, 8668), (3940, 5093), (4334, 4630)]