20755735

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1$

素因数の和:89

約数の個数: 72

約数和(自身を含む): 35048160

約数和(自身を除く): 14292425

約数列:

[1, 5, 7, 11, 13, 29, 35, 55, 65, 77, 91, 121, 143, 145, 169, 203, 319, 377, 385, 455, 605, 715, 845, 847, 1001, 1015, 1183, 1573, 1595, 1859, 1885, 2233, 2639, 3509, 4147, 4235, 4901, 5005, 5915, 7865, 9295, 11011, 11165, 13013, 13195, 17545, 20449, 20735, 24505, 24563, 29029, 34307, 45617, 53911, 55055, 65065, 102245, 122815, 143143, 145145, 171535, 228085, 269555, 319319, 377377, 593021, 715715, 1596595, 1886885, 2965105, 4151147, 20755735]

約数ペア:

[(1, 20755735), (5, 4151147), (7, 2965105), (11, 1886885), (13, 1596595), (29, 715715), (35, 593021), (55, 377377), (65, 319319), (77, 269555), (91, 228085), (121, 171535), (143, 145145), (145, 143143), (169, 122815), (203, 102245), (319, 65065), (377, 55055), (385, 53911), (455, 45617), (605, 34307), (715, 29029), (845, 24563), (847, 24505), (1001, 20735), (1015, 20449), (1183, 17545), (1573, 13195), (1595, 13013), (1859, 11165), (1885, 11011), (2233, 9295), (2639, 7865), (3509, 5915), (4147, 5005), (4235, 4901)]