206814520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:725

約数の個数: 128

約数和(自身を含む): 550851840

約数和(自身を除く): 344037320

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 43, 44, 55, 68, 85, 86, 88, 110, 136, 170, 172, 187, 215, 220, 340, 344, 374, 430, 440, 473, 643, 680, 731, 748, 860, 935, 946, 1286, 1462, 1496, 1720, 1870, 1892, 2365, 2572, 2924, 3215, 3655, 3740, 3784, 4730, 5144, 5848, 6430, 7073, 7310, 7480, 8041, 9460, 10931, 12860, 14146, 14620, 16082, 18920, 21862, 25720, 27649, 28292, 29240, 32164, 35365, 40205, 43724, 54655, 55298, 56584, 64328, 70730, 80410, 87448, 109310, 110596, 120241, 138245, 141460, 160820, 218620, 221192, 240482, 276490, 282920, 304139, 321640, 437240, 470033, 480964, 552980, 601205, 608278, 940066, 961928, 1105960, 1202410, 1216556, 1520695, 1880132, 2350165, 2404820, 2433112, 3041390, 3760264, 4700330, 4809640, 5170363, 6082780, 9400660, 10340726, 12165560, 18801320, 20681452, 25851815, 41362904, 51703630, 103407260, 206814520]

約数ペア:

[(1, 206814520), (2, 103407260), (4, 51703630), (5, 41362904), (8, 25851815), (10, 20681452), (11, 18801320), (17, 12165560), (20, 10340726), (22, 9400660), (34, 6082780), (40, 5170363), (43, 4809640), (44, 4700330), (55, 3760264), (68, 3041390), (85, 2433112), (86, 2404820), (88, 2350165), (110, 1880132), (136, 1520695), (170, 1216556), (172, 1202410), (187, 1105960), (215, 961928), (220, 940066), (340, 608278), (344, 601205), (374, 552980), (430, 480964), (440, 470033), (473, 437240), (643, 321640), (680, 304139), (731, 282920), (748, 276490), (860, 240482), (935, 221192), (946, 218620), (1286, 160820), (1462, 141460), (1496, 138245), (1720, 120241), (1870, 110596), (1892, 109310), (2365, 87448), (2572, 80410), (2924, 70730), (3215, 64328), (3655, 56584), (3740, 55298), (3784, 54655), (4730, 43724), (5144, 40205), (5848, 35365), (6430, 32164), (7073, 29240), (7310, 28292), (7480, 27649), (8041, 25720), (9460, 21862), (10931, 18920), (12860, 16082), (14146, 14620)]