19604720

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{911}}^1$

素因数の和:1193

約数の個数: 40

約数和(自身を含む): 45800640

約数和(自身を除く): 26195920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 911, 1076, 1345, 1822, 2152, 2690, 3644, 4304, 4555, 5380, 7288, 9110, 10760, 14576, 18220, 21520, 36440, 72880, 245059, 490118, 980236, 1225295, 1960472, 2450590, 3920944, 4901180, 9802360, 19604720]

約数ペア:

[(1, 19604720), (2, 9802360), (4, 4901180), (5, 3920944), (8, 2450590), (10, 1960472), (16, 1225295), (20, 980236), (40, 490118), (80, 245059), (269, 72880), (538, 36440), (911, 21520), (1076, 18220), (1345, 14576), (1822, 10760), (2152, 9110), (2690, 7288), (3644, 5380), (4304, 4555)]