720492520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{337}}^1$

素因数の和:515

約数の個数: 128

約数和(自身を含む): 1831040640

約数和(自身を除く): 1110548120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 113, 172, 215, 220, 226, 337, 344, 430, 440, 452, 473, 565, 674, 860, 904, 946, 1130, 1243, 1348, 1685, 1720, 1892, 2260, 2365, 2486, 2696, 3370, 3707, 3784, 4520, 4730, 4859, 4972, 6215, 6740, 7414, 9460, 9718, 9944, 12430, 13480, 14491, 14828, 18535, 18920, 19436, 24295, 24860, 28982, 29656, 37070, 38081, 38872, 48590, 49720, 53449, 57964, 72455, 74140, 76162, 97180, 106898, 115928, 144910, 148280, 152324, 159401, 190405, 194360, 213796, 267245, 289820, 304648, 318802, 380810, 418891, 427592, 534490, 579640, 637604, 761620, 797005, 837782, 1068980, 1275208, 1523240, 1594010, 1637483, 1675564, 2094455, 2137960, 3188020, 3274966, 3351128, 4188910, 6376040, 6549932, 8187415, 8377820, 13099864, 16374830, 16755640, 18012313, 32749660, 36024626, 65499320, 72049252, 90061565, 144098504, 180123130, 360246260, 720492520]

約数ペア:

[(1, 720492520), (2, 360246260), (4, 180123130), (5, 144098504), (8, 90061565), (10, 72049252), (11, 65499320), (20, 36024626), (22, 32749660), (40, 18012313), (43, 16755640), (44, 16374830), (55, 13099864), (86, 8377820), (88, 8187415), (110, 6549932), (113, 6376040), (172, 4188910), (215, 3351128), (220, 3274966), (226, 3188020), (337, 2137960), (344, 2094455), (430, 1675564), (440, 1637483), (452, 1594010), (473, 1523240), (565, 1275208), (674, 1068980), (860, 837782), (904, 797005), (946, 761620), (1130, 637604), (1243, 579640), (1348, 534490), (1685, 427592), (1720, 418891), (1892, 380810), (2260, 318802), (2365, 304648), (2486, 289820), (2696, 267245), (3370, 213796), (3707, 194360), (3784, 190405), (4520, 159401), (4730, 152324), (4859, 148280), (4972, 144910), (6215, 115928), (6740, 106898), (7414, 97180), (9460, 76162), (9718, 74140), (9944, 72455), (12430, 57964), (13480, 53449), (14491, 49720), (14828, 48590), (18535, 38872), (18920, 38081), (19436, 37070), (24295, 29656), (24860, 28982)]