51511408

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{247651}}^1$

素因数の和:247672

約数の個数: 20

約数和(自身を含む): 107480968

約数和(自身を除く): 55969560

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 247651, 495302, 990604, 1981208, 3219463, 3962416, 6438926, 12877852, 25755704, 51511408]

約数ペア:

[(1, 51511408), (2, 25755704), (4, 12877852), (8, 6438926), (13, 3962416), (16, 3219463), (26, 1981208), (52, 990604), (104, 495302), (208, 247651)]