20089851640

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{439}}^1\times {\mathrm{19391}}^1$

素因数の和:19900

約数の個数: 64

約数和(自身を含む): 46075392000

約数和(自身を除く): 25985540360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 439, 472, 590, 878, 1180, 1756, 2195, 2360, 3512, 4390, 8780, 17560, 19391, 25901, 38782, 51802, 77564, 96955, 103604, 129505, 155128, 193910, 207208, 259010, 387820, 518020, 775640, 1036040, 1144069, 2288138, 4576276, 5720345, 8512649, 9152552, 11440690, 17025298, 22881380, 34050596, 42563245, 45762760, 68101192, 85126490, 170252980, 340505960, 502246291, 1004492582, 2008985164, 2511231455, 4017970328, 5022462910, 10044925820, 20089851640]

約数ペア:

[(1, 20089851640), (2, 10044925820), (4, 5022462910), (5, 4017970328), (8, 2511231455), (10, 2008985164), (20, 1004492582), (40, 502246291), (59, 340505960), (118, 170252980), (236, 85126490), (295, 68101192), (439, 45762760), (472, 42563245), (590, 34050596), (878, 22881380), (1180, 17025298), (1756, 11440690), (2195, 9152552), (2360, 8512649), (3512, 5720345), (4390, 4576276), (8780, 2288138), (17560, 1144069), (19391, 1036040), (25901, 775640), (38782, 518020), (51802, 387820), (77564, 259010), (96955, 207208), (103604, 193910), (129505, 155128)]