1380329480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{20407}}^1$

素因数の和:20526

約数の個数: 64

約数和(自身を含む): 3306096000

約数和(自身を除く): 1925766520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 356, 380, 445, 712, 760, 890, 1691, 1780, 3382, 3560, 6764, 8455, 13528, 16910, 20407, 33820, 40814, 67640, 81628, 102035, 163256, 204070, 387733, 408140, 775466, 816280, 1550932, 1816223, 1938665, 3101864, 3632446, 3877330, 7264892, 7754660, 9081115, 14529784, 15509320, 18162230, 34508237, 36324460, 69016474, 72648920, 138032948, 172541185, 276065896, 345082370, 690164740, 1380329480]

約数ペア:

[(1, 1380329480), (2, 690164740), (4, 345082370), (5, 276065896), (8, 172541185), (10, 138032948), (19, 72648920), (20, 69016474), (38, 36324460), (40, 34508237), (76, 18162230), (89, 15509320), (95, 14529784), (152, 9081115), (178, 7754660), (190, 7264892), (356, 3877330), (380, 3632446), (445, 3101864), (712, 1938665), (760, 1816223), (890, 1550932), (1691, 816280), (1780, 775466), (3382, 408140), (3560, 387733), (6764, 204070), (8455, 163256), (13528, 102035), (16910, 81628), (20407, 67640), (33820, 40814)]