980408660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{90947}}^1$

素因数の和:90981

約数の個数: 72

約数和(自身を含む): 2612754144

約数和(自身を除く): 1632345484

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2695, 5390, 10780, 90947, 181894, 363788, 454735, 636629, 909470, 1000417, 1273258, 1818940, 2000834, 2546516, 3183145, 4001668, 4456403, 5002085, 6366290, 7002919, 8912806, 10004170, 12732580, 14005838, 17825612, 20008340, 22282015, 28011676, 35014595, 44564030, 49020433, 70029190, 89128060, 98040866, 140058380, 196081732, 245102165, 490204330, 980408660]

約数ペア:

[(1, 980408660), (2, 490204330), (4, 245102165), (5, 196081732), (7, 140058380), (10, 98040866), (11, 89128060), (14, 70029190), (20, 49020433), (22, 44564030), (28, 35014595), (35, 28011676), (44, 22282015), (49, 20008340), (55, 17825612), (70, 14005838), (77, 12732580), (98, 10004170), (110, 8912806), (140, 7002919), (154, 6366290), (196, 5002085), (220, 4456403), (245, 4001668), (308, 3183145), (385, 2546516), (490, 2000834), (539, 1818940), (770, 1273258), (980, 1000417), (1078, 909470), (1540, 636629), (2156, 454735), (2695, 363788), (5390, 181894), (10780, 90947)]