21703149

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{751}}^1$

素因数の和:802

約数の個数: 36

約数和(自身を含む): 35780160

約数和(自身を除く): 14077011

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 169, 171, 247, 507, 741, 751, 1521, 2223, 2253, 3211, 6759, 9633, 9763, 14269, 28899, 29289, 42807, 87867, 126919, 128421, 185497, 380757, 556491, 1142271, 1669473, 2411461, 7234383, 21703149]

約数ペア:

[(1, 21703149), (3, 7234383), (9, 2411461), (13, 1669473), (19, 1142271), (39, 556491), (57, 380757), (117, 185497), (169, 128421), (171, 126919), (247, 87867), (507, 42807), (741, 29289), (751, 28899), (1521, 14269), (2223, 9763), (2253, 9633), (3211, 6759)]