21253088

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{167}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 43563744

約数和(自身を除く): 22310656

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 97, 164, 167, 194, 328, 334, 388, 656, 668, 776, 1312, 1336, 1552, 2672, 3104, 3977, 5344, 6847, 7954, 13694, 15908, 16199, 27388, 31816, 32398, 54776, 63632, 64796, 109552, 127264, 129592, 219104, 259184, 518368, 664159, 1328318, 2656636, 5313272, 10626544, 21253088]

約数ペア:

[(1, 21253088), (2, 10626544), (4, 5313272), (8, 2656636), (16, 1328318), (32, 664159), (41, 518368), (82, 259184), (97, 219104), (164, 129592), (167, 127264), (194, 109552), (328, 64796), (334, 63632), (388, 54776), (656, 32398), (668, 31816), (776, 27388), (1312, 16199), (1336, 15908), (1552, 13694), (2672, 7954), (3104, 6847), (3977, 5344)]