21102080

素因数分解:

$2^9\times 5^1\times {\mathrm{8243}}^1$

素因数の和:8266

約数の個数: 40

約数和(自身を含む): 50601672

約数和(自身を除く): 29499592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 8243, 16486, 32972, 41215, 65944, 82430, 131888, 164860, 263776, 329720, 527552, 659440, 1055104, 1318880, 2110208, 2637760, 4220416, 5275520, 10551040, 21102080]

約数ペア:

[(1, 21102080), (2, 10551040), (4, 5275520), (5, 4220416), (8, 2637760), (10, 2110208), (16, 1318880), (20, 1055104), (32, 659440), (40, 527552), (64, 329720), (80, 263776), (128, 164860), (160, 131888), (256, 82430), (320, 65944), (512, 41215), (640, 32972), (1280, 16486), (2560, 8243)]