21815706724

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{639157}}^1$

素因数の和:639244

約数の個数: 48

約数和(自身を含む): 46387531008

約数和(自身を除く): 24571824284

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 53, 92, 106, 161, 212, 322, 371, 644, 742, 1219, 1484, 2438, 4876, 8533, 17066, 34132, 639157, 1278314, 2556628, 4474099, 8948198, 14700611, 17896396, 29401222, 33875321, 58802444, 67750642, 102904277, 135501284, 205808554, 237127247, 411617108, 474254494, 779132383, 948508988, 1558264766, 3116529532, 5453926681, 10907853362, 21815706724]

約数ペア:

[(1, 21815706724), (2, 10907853362), (4, 5453926681), (7, 3116529532), (14, 1558264766), (23, 948508988), (28, 779132383), (46, 474254494), (53, 411617108), (92, 237127247), (106, 205808554), (161, 135501284), (212, 102904277), (322, 67750642), (371, 58802444), (644, 33875321), (742, 29401222), (1219, 17896396), (1484, 14700611), (2438, 8948198), (4876, 4474099), (8533, 2556628), (17066, 1278314), (34132, 639157)]