128215880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246569}}^1$

素因数の和:246593

約数の個数: 32

約数和(自身を含む): 310678200

約数和(自身を除く): 182462320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 246569, 493138, 986276, 1232845, 1972552, 2465690, 3205397, 4931380, 6410794, 9862760, 12821588, 16026985, 25643176, 32053970, 64107940, 128215880]

約数ペア:

[(1, 128215880), (2, 64107940), (4, 32053970), (5, 25643176), (8, 16026985), (10, 12821588), (13, 9862760), (20, 6410794), (26, 4931380), (40, 3205397), (52, 2465690), (65, 1972552), (104, 1232845), (130, 986276), (260, 493138), (520, 246569)]