21030376

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{661}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 40871880

約数和(自身を除く): 19841504

約数列:

[1, 2, 4, 8, 41, 82, 97, 164, 194, 328, 388, 661, 776, 1322, 2644, 3977, 5288, 7954, 15908, 27101, 31816, 54202, 64117, 108404, 128234, 216808, 256468, 512936, 2628797, 5257594, 10515188, 21030376]

約数ペア:

[(1, 21030376), (2, 10515188), (4, 5257594), (8, 2628797), (41, 512936), (82, 256468), (97, 216808), (164, 128234), (194, 108404), (328, 64117), (388, 54202), (661, 31816), (776, 27101), (1322, 15908), (2644, 7954), (3977, 5288)]