21629120

素因数分解:

$2^6\times 5^1\times {\mathrm{257}}^1\times {\mathrm{263}}^1$

素因数の和:537

約数の個数: 56

約数和(自身を含む): 51901344

約数和(自身を除く): 30272224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 257, 263, 320, 514, 526, 1028, 1052, 1285, 1315, 2056, 2104, 2570, 2630, 4112, 4208, 5140, 5260, 8224, 8416, 10280, 10520, 16448, 16832, 20560, 21040, 41120, 42080, 67591, 82240, 84160, 135182, 270364, 337955, 540728, 675910, 1081456, 1351820, 2162912, 2703640, 4325824, 5407280, 10814560, 21629120]

約数ペア:

[(1, 21629120), (2, 10814560), (4, 5407280), (5, 4325824), (8, 2703640), (10, 2162912), (16, 1351820), (20, 1081456), (32, 675910), (40, 540728), (64, 337955), (80, 270364), (160, 135182), (257, 84160), (263, 82240), (320, 67591), (514, 42080), (526, 41120), (1028, 21040), (1052, 20560), (1285, 16832), (1315, 16448), (2056, 10520), (2104, 10280), (2570, 8416), (2630, 8224), (4112, 5260), (4208, 5140)]