399687681

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{619}}^1$

素因数の和:837

約数の個数: 32

約数和(自身を含む): 565678080

約数和(自身を除く): 165990399

約数列:

[1, 3, 31, 53, 93, 131, 159, 393, 619, 1643, 1857, 4061, 4929, 6943, 12183, 19189, 20829, 32807, 57567, 81089, 98421, 215233, 243267, 645699, 1017017, 2513759, 3051051, 4297717, 7541277, 12893151, 133229227, 399687681]

約数ペア:

[(1, 399687681), (3, 133229227), (31, 12893151), (53, 7541277), (93, 4297717), (131, 3051051), (159, 2513759), (393, 1017017), (619, 645699), (1643, 243267), (1857, 215233), (4061, 98421), (4929, 81089), (6943, 57567), (12183, 32807), (19189, 20829)]