19701920

素因数分解:

$2^5\times 5^1\times 7^3\times {\mathrm{359}}^1$

素因数の和:395

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 34730080

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, 343, 359, 392, 490, 560, 686, 718, 784, 980, 1120, 1372, 1436, 1568, 1715, 1795, 1960, 2513, 2744, 2872, 3430, 3590, 3920, 5026, 5488, 5744, 6860, 7180, 7840, 10052, 10976, 11488, 12565, 13720, 14360, 17591, 20104, 25130, 27440, 28720, 35182, 40208, 50260, 54880, 57440, 70364, 80416, 87955, 100520, 123137, 140728, 175910, 201040, 246274, 281456, 351820, 402080, 492548, 562912, 615685, 703640, 985096, 1231370, 1407280, 1970192, 2462740, 2814560, 3940384, 4925480, 9850960, 19701920]

約数ペア:

[(1, 19701920), (2, 9850960), (4, 4925480), (5, 3940384), (7, 2814560), (8, 2462740), (10, 1970192), (14, 1407280), (16, 1231370), (20, 985096), (28, 703640), (32, 615685), (35, 562912), (40, 492548), (49, 402080), (56, 351820), (70, 281456), (80, 246274), (98, 201040), (112, 175910), (140, 140728), (160, 123137), (196, 100520), (224, 87955), (245, 80416), (280, 70364), (343, 57440), (359, 54880), (392, 50260), (490, 40208), (560, 35182), (686, 28720), (718, 27440), (784, 25130), (980, 20104), (1120, 17591), (1372, 14360), (1436, 13720), (1568, 12565), (1715, 11488), (1795, 10976), (1960, 10052), (2513, 7840), (2744, 7180), (2872, 6860), (3430, 5744), (3590, 5488), (3920, 5026)]