19927520

素因数分解:

$2^5\times 5^1\times {\mathrm{269}}^1\times {\mathrm{463}}^1$

素因数の和:747

約数の個数: 48

約数和(自身を含む): 47355840

約数和(自身を除く): 27428320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 269, 463, 538, 926, 1076, 1345, 1852, 2152, 2315, 2690, 3704, 4304, 4630, 5380, 7408, 8608, 9260, 10760, 14816, 18520, 21520, 37040, 43040, 74080, 124547, 249094, 498188, 622735, 996376, 1245470, 1992752, 2490940, 3985504, 4981880, 9963760, 19927520]

約数ペア:

[(1, 19927520), (2, 9963760), (4, 4981880), (5, 3985504), (8, 2490940), (10, 1992752), (16, 1245470), (20, 996376), (32, 622735), (40, 498188), (80, 249094), (160, 124547), (269, 74080), (463, 43040), (538, 37040), (926, 21520), (1076, 18520), (1345, 14816), (1852, 10760), (2152, 9260), (2315, 8608), (2690, 7408), (3704, 5380), (4304, 4630)]