128407240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246937}}^1$

素因数の和:246961

約数の個数: 32

約数和(自身を含む): 311141880

約数和(自身を除く): 182734640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 246937, 493874, 987748, 1234685, 1975496, 2469370, 3210181, 4938740, 6420362, 9877480, 12840724, 16050905, 25681448, 32101810, 64203620, 128407240]

約数ペア:

[(1, 128407240), (2, 64203620), (4, 32101810), (5, 25681448), (8, 16050905), (10, 12840724), (13, 9877480), (20, 6420362), (26, 4938740), (40, 3210181), (52, 2469370), (65, 1975496), (104, 1234685), (130, 987748), (260, 493874), (520, 246937)]