209968240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1291}}^1$

素因数の和:1430

約数の個数: 80

約数和(自身を含む): 519073920

約数和(自身を除く): 309105680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 107, 152, 190, 214, 304, 380, 428, 535, 760, 856, 1070, 1291, 1520, 1712, 2033, 2140, 2582, 4066, 4280, 5164, 6455, 8132, 8560, 10165, 10328, 12910, 16264, 20330, 20656, 24529, 25820, 32528, 40660, 49058, 51640, 81320, 98116, 103280, 122645, 138137, 162640, 196232, 245290, 276274, 392464, 490580, 552548, 690685, 981160, 1105096, 1381370, 1962320, 2210192, 2624603, 2762740, 5249206, 5525480, 10498412, 11050960, 13123015, 20996824, 26246030, 41993648, 52492060, 104984120, 209968240]

約数ペア:

[(1, 209968240), (2, 104984120), (4, 52492060), (5, 41993648), (8, 26246030), (10, 20996824), (16, 13123015), (19, 11050960), (20, 10498412), (38, 5525480), (40, 5249206), (76, 2762740), (80, 2624603), (95, 2210192), (107, 1962320), (152, 1381370), (190, 1105096), (214, 981160), (304, 690685), (380, 552548), (428, 490580), (535, 392464), (760, 276274), (856, 245290), (1070, 196232), (1291, 162640), (1520, 138137), (1712, 122645), (2033, 103280), (2140, 98116), (2582, 81320), (4066, 51640), (4280, 49058), (5164, 40660), (6455, 32528), (8132, 25820), (8560, 24529), (10165, 20656), (10328, 20330), (12910, 16264)]