21513984

素因数分解:

$2^8\times 3^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:385

約数の個数: 72

約数和(自身を含む): 58008720

約数和(自身を除く): 36494736

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 109, 128, 192, 218, 256, 257, 327, 384, 436, 514, 654, 768, 771, 872, 1028, 1308, 1542, 1744, 2056, 2616, 3084, 3488, 4112, 5232, 6168, 6976, 8224, 10464, 12336, 13952, 16448, 20928, 24672, 27904, 28013, 32896, 41856, 49344, 56026, 65792, 83712, 84039, 98688, 112052, 168078, 197376, 224104, 336156, 448208, 672312, 896416, 1344624, 1792832, 2689248, 3585664, 5378496, 7171328, 10756992, 21513984]

約数ペア:

[(1, 21513984), (2, 10756992), (3, 7171328), (4, 5378496), (6, 3585664), (8, 2689248), (12, 1792832), (16, 1344624), (24, 896416), (32, 672312), (48, 448208), (64, 336156), (96, 224104), (109, 197376), (128, 168078), (192, 112052), (218, 98688), (256, 84039), (257, 83712), (327, 65792), (384, 56026), (436, 49344), (514, 41856), (654, 32896), (768, 28013), (771, 27904), (872, 24672), (1028, 20928), (1308, 16448), (1542, 13952), (1744, 12336), (2056, 10464), (2616, 8224), (3084, 6976), (3488, 6168), (4112, 5232)]