21247676

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 40981248

約数和(自身を除く): 19733572

約数列:

[1, 2, 4, 23, 41, 43, 46, 82, 86, 92, 131, 164, 172, 262, 524, 943, 989, 1763, 1886, 1978, 3013, 3526, 3772, 3956, 5371, 5633, 6026, 7052, 10742, 11266, 12052, 21484, 22532, 40549, 81098, 123533, 129559, 162196, 230953, 247066, 259118, 461906, 494132, 518236, 923812, 5311919, 10623838, 21247676]

約数ペア:

[(1, 21247676), (2, 10623838), (4, 5311919), (23, 923812), (41, 518236), (43, 494132), (46, 461906), (82, 259118), (86, 247066), (92, 230953), (131, 162196), (164, 129559), (172, 123533), (262, 81098), (524, 40549), (943, 22532), (989, 21484), (1763, 12052), (1886, 11266), (1978, 10742), (3013, 7052), (3526, 6026), (3772, 5633), (3956, 5371)]