20975864

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28813}}^1$

素因数の和:28839

約数の個数: 32

約数和(自身を含む): 48407520

約数和(自身を除く): 27431656

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 28813, 57626, 115252, 201691, 230504, 374569, 403382, 749138, 806764, 1498276, 1613528, 2621983, 2996552, 5243966, 10487932, 20975864]

約数ペア:

[(1, 20975864), (2, 10487932), (4, 5243966), (7, 2996552), (8, 2621983), (13, 1613528), (14, 1498276), (26, 806764), (28, 749138), (52, 403382), (56, 374569), (91, 230504), (104, 201691), (182, 115252), (364, 57626), (728, 28813)]