20461120

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1487}}^1$

素因数の和:1547

約数の個数: 56

約数和(自身を含む): 49889664

約数和(自身を除く): 29428544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 160, 172, 215, 320, 344, 430, 688, 860, 1376, 1487, 1720, 2752, 2974, 3440, 5948, 6880, 7435, 11896, 13760, 14870, 23792, 29740, 47584, 59480, 63941, 95168, 118960, 127882, 237920, 255764, 319705, 475840, 511528, 639410, 1023056, 1278820, 2046112, 2557640, 4092224, 5115280, 10230560, 20461120]

約数ペア:

[(1, 20461120), (2, 10230560), (4, 5115280), (5, 4092224), (8, 2557640), (10, 2046112), (16, 1278820), (20, 1023056), (32, 639410), (40, 511528), (43, 475840), (64, 319705), (80, 255764), (86, 237920), (160, 127882), (172, 118960), (215, 95168), (320, 63941), (344, 59480), (430, 47584), (688, 29740), (860, 23792), (1376, 14870), (1487, 13760), (1720, 11896), (2752, 7435), (2974, 6880), (3440, 5948)]