18866960

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{4813}}^1$

素因数の和:4840

約数の個数: 60

約数和(自身を含む): 51038028

約数和(自身を除く): 32171068

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 4813, 9626, 19252, 24065, 33691, 38504, 48130, 67382, 77008, 96260, 134764, 168455, 192520, 235837, 269528, 336910, 385040, 471674, 539056, 673820, 943348, 1179185, 1347640, 1886696, 2358370, 2695280, 3773392, 4716740, 9433480, 18866960]

約数ペア:

[(1, 18866960), (2, 9433480), (4, 4716740), (5, 3773392), (7, 2695280), (8, 2358370), (10, 1886696), (14, 1347640), (16, 1179185), (20, 943348), (28, 673820), (35, 539056), (40, 471674), (49, 385040), (56, 336910), (70, 269528), (80, 235837), (98, 192520), (112, 168455), (140, 134764), (196, 96260), (245, 77008), (280, 67382), (392, 48130), (490, 38504), (560, 33691), (784, 24065), (980, 19252), (1960, 9626), (3920, 4813)]