20805124520

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{923851}}^1$

素因数の和:924425

約数の個数: 32

約数和(自身を含む): 46894727520

約数和(自身を除く): 26089603000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 1126, 2252, 2815, 4504, 5630, 11260, 22520, 923851, 1847702, 3695404, 4619255, 7390808, 9238510, 18477020, 36954040, 520128113, 1040256226, 2080512452, 2600640565, 4161024904, 5201281130, 10402562260, 20805124520]

約数ペア:

[(1, 20805124520), (2, 10402562260), (4, 5201281130), (5, 4161024904), (8, 2600640565), (10, 2080512452), (20, 1040256226), (40, 520128113), (563, 36954040), (1126, 18477020), (2252, 9238510), (2815, 7390808), (4504, 4619255), (5630, 3695404), (11260, 1847702), (22520, 923851)]