28504528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3187}}^1$

素因数の和:3251

約数の個数: 40

約数和(自身を含む): 60878048

約数和(自身を除く): 32373520

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 2236, 3187, 4472, 6374, 8944, 12748, 25496, 41431, 50992, 82862, 137041, 165724, 274082, 331448, 548164, 662896, 1096328, 1781533, 2192656, 3563066, 7126132, 14252264, 28504528]

約数ペア:

[(1, 28504528), (2, 14252264), (4, 7126132), (8, 3563066), (13, 2192656), (16, 1781533), (26, 1096328), (43, 662896), (52, 548164), (86, 331448), (104, 274082), (172, 165724), (208, 137041), (344, 82862), (559, 50992), (688, 41431), (1118, 25496), (2236, 12748), (3187, 8944), (4472, 6374)]