161897560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{367949}}^1$

素因数の和:367971

約数の個数: 32

約数和(自身を含む): 397386000

約数和(自身を除く): 235488440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 367949, 735898, 1471796, 1839745, 2943592, 3679490, 4047439, 7358980, 8094878, 14717960, 16189756, 20237195, 32379512, 40474390, 80948780, 161897560]

約数ペア:

[(1, 161897560), (2, 80948780), (4, 40474390), (5, 32379512), (8, 20237195), (10, 16189756), (11, 14717960), (20, 8094878), (22, 7358980), (40, 4047439), (44, 3679490), (55, 2943592), (88, 1839745), (110, 1471796), (220, 735898), (440, 367949)]