18605559

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 29675520

約数和(自身を除く): 11069961

約数列:

[1, 3, 7, 21, 29, 87, 137, 203, 223, 411, 609, 669, 959, 1561, 2877, 3973, 4683, 6467, 11919, 19401, 27811, 30551, 45269, 83433, 91653, 135807, 213857, 641571, 885979, 2657937, 6201853, 18605559]

約数ペア:

[(1, 18605559), (3, 6201853), (7, 2657937), (21, 885979), (29, 641571), (87, 213857), (137, 135807), (203, 91653), (223, 83433), (411, 45269), (609, 30551), (669, 27811), (959, 19401), (1561, 11919), (2877, 6467), (3973, 4683)]