20721334

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:280

約数の個数: 32

約数和(自身を含む): 34122816

約数和(自身を除く): 13401482

約数列:

[1, 2, 17, 34, 61, 97, 103, 122, 194, 206, 1037, 1649, 1751, 2074, 3298, 3502, 5917, 6283, 9991, 11834, 12566, 19982, 100589, 106811, 169847, 201178, 213622, 339694, 609451, 1218902, 10360667, 20721334]

約数ペア:

[(1, 20721334), (2, 10360667), (17, 1218902), (34, 609451), (61, 339694), (97, 213622), (103, 201178), (122, 169847), (194, 106811), (206, 100589), (1037, 19982), (1649, 12566), (1751, 11834), (2074, 9991), (3298, 6283), (3502, 5917)]