64781920

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{8263}}^1$

素因数の和:8292

約数の個数: 72

約数和(自身を含む): 178056144

約数和(自身を除く): 113274224

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 8263, 16526, 33052, 41315, 57841, 66104, 82630, 115682, 132208, 165260, 231364, 264416, 289205, 330520, 404887, 462728, 578410, 661040, 809774, 925456, 1156820, 1322080, 1619548, 1850912, 2024435, 2313640, 3239096, 4048870, 4627280, 6478192, 8097740, 9254560, 12956384, 16195480, 32390960, 64781920]

約数ペア:

[(1, 64781920), (2, 32390960), (4, 16195480), (5, 12956384), (7, 9254560), (8, 8097740), (10, 6478192), (14, 4627280), (16, 4048870), (20, 3239096), (28, 2313640), (32, 2024435), (35, 1850912), (40, 1619548), (49, 1322080), (56, 1156820), (70, 925456), (80, 809774), (98, 661040), (112, 578410), (140, 462728), (160, 404887), (196, 330520), (224, 289205), (245, 264416), (280, 231364), (392, 165260), (490, 132208), (560, 115682), (784, 82630), (980, 66104), (1120, 57841), (1568, 41315), (1960, 33052), (3920, 16526), (7840, 8263)]