21295527

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 10845273

約数列:

[1, 3, 11, 33, 61, 71, 149, 183, 213, 447, 671, 781, 1639, 2013, 2343, 4331, 4917, 9089, 10579, 12993, 27267, 31737, 47641, 99979, 116369, 142923, 299937, 349107, 645319, 1935957, 7098509, 21295527]

約数ペア:

[(1, 21295527), (3, 7098509), (11, 1935957), (33, 645319), (61, 349107), (71, 299937), (149, 142923), (183, 116369), (213, 99979), (447, 47641), (671, 31737), (781, 27267), (1639, 12993), (2013, 10579), (2343, 9089), (4331, 4917)]