51038720

素因数分解:

$2^9\times 5^1\times {\mathrm{19937}}^1$

素因数の和:19960

約数の個数: 40

約数和(自身を含む): 122379444

約数和(自身を除く): 71340724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 19937, 39874, 79748, 99685, 159496, 199370, 318992, 398740, 637984, 797480, 1275968, 1594960, 2551936, 3189920, 5103872, 6379840, 10207744, 12759680, 25519360, 51038720]

約数ペア:

[(1, 51038720), (2, 25519360), (4, 12759680), (5, 10207744), (8, 6379840), (10, 5103872), (16, 3189920), (20, 2551936), (32, 1594960), (40, 1275968), (64, 797480), (80, 637984), (128, 398740), (160, 318992), (256, 199370), (320, 159496), (512, 99685), (640, 79748), (1280, 39874), (2560, 19937)]