81100408

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{431}}^1\times {\mathrm{547}}^1$

素因数の和:1027

約数の個数: 32

約数和(自身を含む): 156245760

約数和(自身を除く): 75145352

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 431, 547, 862, 1094, 1724, 2188, 3448, 4376, 18533, 23521, 37066, 47042, 74132, 94084, 148264, 188168, 235757, 471514, 943028, 1886056, 10137551, 20275102, 40550204, 81100408]

約数ペア:

[(1, 81100408), (2, 40550204), (4, 20275102), (8, 10137551), (43, 1886056), (86, 943028), (172, 471514), (344, 235757), (431, 188168), (547, 148264), (862, 94084), (1094, 74132), (1724, 47042), (2188, 37066), (3448, 23521), (4376, 18533)]