21294845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 31622400

約数和(自身を除く): 10327555

約数列:

[1, 5, 11, 13, 29, 55, 65, 79, 143, 145, 169, 319, 377, 395, 715, 845, 869, 1027, 1595, 1859, 1885, 2291, 4147, 4345, 4901, 5135, 9295, 11297, 11455, 13351, 20735, 24505, 25201, 29783, 53911, 56485, 66755, 126005, 146861, 148915, 269555, 327613, 387179, 734305, 1638065, 1935895, 4258969, 21294845]

約数ペア:

[(1, 21294845), (5, 4258969), (11, 1935895), (13, 1638065), (29, 734305), (55, 387179), (65, 327613), (79, 269555), (143, 148915), (145, 146861), (169, 126005), (319, 66755), (377, 56485), (395, 53911), (715, 29783), (845, 25201), (869, 24505), (1027, 20735), (1595, 13351), (1859, 11455), (1885, 11297), (2291, 9295), (4147, 5135), (4345, 4901)]