209856640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{337}}^1$

素因数の和:502

約数の個数: 128

約数和(自身を含む): 579196800

約数和(自身を除く): 369340160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 139, 140, 160, 224, 278, 280, 320, 337, 448, 556, 560, 640, 674, 695, 896, 973, 1112, 1120, 1348, 1390, 1685, 1946, 2224, 2240, 2359, 2696, 2780, 3370, 3892, 4448, 4480, 4718, 4865, 5392, 5560, 6740, 7784, 8896, 9436, 9730, 10784, 11120, 11795, 13480, 15568, 17792, 18872, 19460, 21568, 22240, 23590, 26960, 31136, 37744, 38920, 43136, 44480, 46843, 47180, 53920, 62272, 75488, 77840, 88960, 93686, 94360, 107840, 124544, 150976, 155680, 187372, 188720, 215680, 234215, 301952, 311360, 327901, 374744, 377440, 468430, 622720, 655802, 749488, 754880, 936860, 1311604, 1498976, 1509760, 1639505, 1873720, 2623208, 2997952, 3279010, 3747440, 5246416, 5995904, 6558020, 7494880, 10492832, 13116040, 14989760, 20985664, 26232080, 29979520, 41971328, 52464160, 104928320, 209856640]

約数ペア:

[(1, 209856640), (2, 104928320), (4, 52464160), (5, 41971328), (7, 29979520), (8, 26232080), (10, 20985664), (14, 14989760), (16, 13116040), (20, 10492832), (28, 7494880), (32, 6558020), (35, 5995904), (40, 5246416), (56, 3747440), (64, 3279010), (70, 2997952), (80, 2623208), (112, 1873720), (128, 1639505), (139, 1509760), (140, 1498976), (160, 1311604), (224, 936860), (278, 754880), (280, 749488), (320, 655802), (337, 622720), (448, 468430), (556, 377440), (560, 374744), (640, 327901), (674, 311360), (695, 301952), (896, 234215), (973, 215680), (1112, 188720), (1120, 187372), (1348, 155680), (1390, 150976), (1685, 124544), (1946, 107840), (2224, 94360), (2240, 93686), (2359, 88960), (2696, 77840), (2780, 75488), (3370, 62272), (3892, 53920), (4448, 47180), (4480, 46843), (4718, 44480), (4865, 43136), (5392, 38920), (5560, 37744), (6740, 31136), (7784, 26960), (8896, 23590), (9436, 22240), (9730, 21568), (10784, 19460), (11120, 18872), (11795, 17792), (13480, 15568)]