18747080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 46500480

約数和(自身を除く): 27753400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 137, 220, 274, 311, 440, 548, 622, 685, 1096, 1244, 1370, 1507, 1555, 2488, 2740, 3014, 3110, 3421, 5480, 6028, 6220, 6842, 7535, 12056, 12440, 13684, 15070, 17105, 27368, 30140, 34210, 42607, 60280, 68420, 85214, 136840, 170428, 213035, 340856, 426070, 468677, 852140, 937354, 1704280, 1874708, 2343385, 3749416, 4686770, 9373540, 18747080]

約数ペア:

[(1, 18747080), (2, 9373540), (4, 4686770), (5, 3749416), (8, 2343385), (10, 1874708), (11, 1704280), (20, 937354), (22, 852140), (40, 468677), (44, 426070), (55, 340856), (88, 213035), (110, 170428), (137, 136840), (220, 85214), (274, 68420), (311, 60280), (440, 42607), (548, 34210), (622, 30140), (685, 27368), (1096, 17105), (1244, 15070), (1370, 13684), (1507, 12440), (1555, 12056), (2488, 7535), (2740, 6842), (3014, 6220), (3110, 6028), (3421, 5480)]