21578752

素因数分解:

$2^{10}\times {\mathrm{13}}^1\times {\mathrm{1621}}^1$

素因数の和:1654

約数の個数: 44

約数和(自身を含む): 46483276

約数和(自身を除く): 24904524

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1024, 1621, 1664, 3242, 3328, 6484, 6656, 12968, 13312, 21073, 25936, 42146, 51872, 84292, 103744, 168584, 207488, 337168, 414976, 674336, 829952, 1348672, 1659904, 2697344, 5394688, 10789376, 21578752]

約数ペア:

[(1, 21578752), (2, 10789376), (4, 5394688), (8, 2697344), (13, 1659904), (16, 1348672), (26, 829952), (32, 674336), (52, 414976), (64, 337168), (104, 207488), (128, 168584), (208, 103744), (256, 84292), (416, 51872), (512, 42146), (832, 25936), (1024, 21073), (1621, 13312), (1664, 12968), (3242, 6656), (3328, 6484)]