21596922

素因数分解:

$2^1\times 3^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 50181120

約数和(自身を除く): 28584198

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 54, 71, 86, 129, 131, 142, 213, 258, 262, 387, 393, 426, 639, 774, 786, 1161, 1179, 1278, 1917, 2322, 2358, 3053, 3537, 3834, 5633, 6106, 7074, 9159, 9301, 11266, 16899, 18318, 18602, 27477, 27903, 33798, 50697, 54954, 55806, 82431, 83709, 101394, 152091, 164862, 167418, 251127, 304182, 399943, 502254, 799886, 1199829, 2399658, 3599487, 7198974, 10798461, 21596922]

約数ペア:

[(1, 21596922), (2, 10798461), (3, 7198974), (6, 3599487), (9, 2399658), (18, 1199829), (27, 799886), (43, 502254), (54, 399943), (71, 304182), (86, 251127), (129, 167418), (131, 164862), (142, 152091), (213, 101394), (258, 83709), (262, 82431), (387, 55806), (393, 54954), (426, 50697), (639, 33798), (774, 27903), (786, 27477), (1161, 18602), (1179, 18318), (1278, 16899), (1917, 11266), (2322, 9301), (2358, 9159), (3053, 7074), (3537, 6106), (3834, 5633)]