20389160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:482

約数の個数: 64

約数和(自身を含む): 50544000

約数和(自身を除く): 30154840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 149, 220, 298, 311, 440, 596, 622, 745, 1192, 1244, 1490, 1555, 1639, 2488, 2980, 3110, 3278, 3421, 5960, 6220, 6556, 6842, 8195, 12440, 13112, 13684, 16390, 17105, 27368, 32780, 34210, 46339, 65560, 68420, 92678, 136840, 185356, 231695, 370712, 463390, 509729, 926780, 1019458, 1853560, 2038916, 2548645, 4077832, 5097290, 10194580, 20389160]

約数ペア:

[(1, 20389160), (2, 10194580), (4, 5097290), (5, 4077832), (8, 2548645), (10, 2038916), (11, 1853560), (20, 1019458), (22, 926780), (40, 509729), (44, 463390), (55, 370712), (88, 231695), (110, 185356), (149, 136840), (220, 92678), (298, 68420), (311, 65560), (440, 46339), (596, 34210), (622, 32780), (745, 27368), (1192, 17105), (1244, 16390), (1490, 13684), (1555, 13112), (1639, 12440), (2488, 8195), (2980, 6842), (3110, 6556), (3278, 6220), (3421, 5960)]