51681805

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 81100800

約数和(自身を除く): 29418995

約数列:

[1, 5, 7, 19, 23, 31, 35, 95, 109, 115, 133, 155, 161, 217, 437, 545, 589, 665, 713, 763, 805, 1085, 2071, 2185, 2507, 2945, 3059, 3379, 3565, 3815, 4123, 4991, 10355, 12535, 13547, 14497, 15295, 16895, 17549, 20615, 23653, 24955, 47633, 64201, 67735, 72485, 77717, 87745, 94829, 118265, 238165, 321005, 333431, 388585, 449407, 474145, 544019, 1476623, 1667155, 2247035, 2720095, 7383115, 10336361, 51681805]

約数ペア:

[(1, 51681805), (5, 10336361), (7, 7383115), (19, 2720095), (23, 2247035), (31, 1667155), (35, 1476623), (95, 544019), (109, 474145), (115, 449407), (133, 388585), (155, 333431), (161, 321005), (217, 238165), (437, 118265), (545, 94829), (589, 87745), (665, 77717), (713, 72485), (763, 67735), (805, 64201), (1085, 47633), (2071, 24955), (2185, 23653), (2507, 20615), (2945, 17549), (3059, 16895), (3379, 15295), (3565, 14497), (3815, 13547), (4123, 12535), (4991, 10355)]