261947280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{155921}}^1$

素因数の和:155944

約数の個数: 80

約数和(自身を含む): 928047744

約数和(自身を除く): 666100464

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 155921, 311842, 467763, 623684, 779605, 935526, 1091447, 1247368, 1559210, 1871052, 2182894, 2338815, 2494736, 3118420, 3274341, 3742104, 4365788, 4677630, 5457235, 6236840, 6548682, 7484208, 8731576, 9355260, 10914470, 12473680, 13097364, 16371705, 17463152, 18710520, 21828940, 26194728, 32743410, 37421040, 43657880, 52389456, 65486820, 87315760, 130973640, 261947280]

約数ペア:

[(1, 261947280), (2, 130973640), (3, 87315760), (4, 65486820), (5, 52389456), (6, 43657880), (7, 37421040), (8, 32743410), (10, 26194728), (12, 21828940), (14, 18710520), (15, 17463152), (16, 16371705), (20, 13097364), (21, 12473680), (24, 10914470), (28, 9355260), (30, 8731576), (35, 7484208), (40, 6548682), (42, 6236840), (48, 5457235), (56, 4677630), (60, 4365788), (70, 3742104), (80, 3274341), (84, 3118420), (105, 2494736), (112, 2338815), (120, 2182894), (140, 1871052), (168, 1559210), (210, 1247368), (240, 1091447), (280, 935526), (336, 779605), (420, 623684), (560, 467763), (840, 311842), (1680, 155921)]