20462080

素因数分解:

$2^9\times 5^1\times {\mathrm{7993}}^1$

素因数の和:8016

約数の個数: 40

約数和(自身を含む): 49067172

約数和(自身を除く): 28605092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7993, 15986, 31972, 39965, 63944, 79930, 127888, 159860, 255776, 319720, 511552, 639440, 1023104, 1278880, 2046208, 2557760, 4092416, 5115520, 10231040, 20462080]

約数ペア:

[(1, 20462080), (2, 10231040), (4, 5115520), (5, 4092416), (8, 2557760), (10, 2046208), (16, 1278880), (20, 1023104), (32, 639440), (40, 511552), (64, 319720), (80, 255776), (128, 159860), (160, 127888), (256, 79930), (320, 63944), (512, 39965), (640, 31972), (1280, 15986), (2560, 7993)]