20910080

素因数分解:

$2^{12}\times 5^1\times {\mathrm{1021}}^1$

素因数の和:1050

約数の個数: 52

約数和(自身を含む): 50227212

約数和(自身を除く): 29317132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1021, 1024, 1280, 2042, 2048, 2560, 4084, 4096, 5105, 5120, 8168, 10210, 10240, 16336, 20420, 20480, 32672, 40840, 65344, 81680, 130688, 163360, 261376, 326720, 522752, 653440, 1045504, 1306880, 2091008, 2613760, 4182016, 5227520, 10455040, 20910080]

約数ペア:

[(1, 20910080), (2, 10455040), (4, 5227520), (5, 4182016), (8, 2613760), (10, 2091008), (16, 1306880), (20, 1045504), (32, 653440), (40, 522752), (64, 326720), (80, 261376), (128, 163360), (160, 130688), (256, 81680), (320, 65344), (512, 40840), (640, 32672), (1021, 20480), (1024, 20420), (1280, 16336), (2042, 10240), (2048, 10210), (2560, 8168), (4084, 5120), (4096, 5105)]