20747972

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2861}}^1$

素因数の和:2916

約数の個数: 36

約数和(自身を含む): 43393644

約数和(自身を除く): 22645672

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 518, 1036, 1813, 2861, 3626, 5722, 7252, 11444, 20027, 40054, 80108, 105857, 140189, 211714, 280378, 423428, 560756, 740999, 1481998, 2963996, 5186993, 10373986, 20747972]

約数ペア:

[(1, 20747972), (2, 10373986), (4, 5186993), (7, 2963996), (14, 1481998), (28, 740999), (37, 560756), (49, 423428), (74, 280378), (98, 211714), (148, 140189), (196, 105857), (259, 80108), (518, 40054), (1036, 20027), (1813, 11444), (2861, 7252), (3626, 5722)]