21300656

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102407}}^1$

素因数の和:102428

約数の個数: 20

約数和(自身を含む): 44445072

約数和(自身を除く): 23144416

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102407, 204814, 409628, 819256, 1331291, 1638512, 2662582, 5325164, 10650328, 21300656]

約数ペア:

[(1, 21300656), (2, 10650328), (4, 5325164), (8, 2662582), (13, 1638512), (16, 1331291), (26, 819256), (52, 409628), (104, 204814), (208, 102407)]