18813172

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 39739392

約数和(自身を除く): 20926220

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 131, 161, 223, 262, 322, 446, 524, 644, 892, 917, 1561, 1834, 3013, 3122, 3668, 5129, 6026, 6244, 10258, 12052, 20516, 21091, 29213, 35903, 42182, 58426, 71806, 84364, 116852, 143612, 204491, 408982, 671899, 817964, 1343798, 2687596, 4703293, 9406586, 18813172]

約数ペア:

[(1, 18813172), (2, 9406586), (4, 4703293), (7, 2687596), (14, 1343798), (23, 817964), (28, 671899), (46, 408982), (92, 204491), (131, 143612), (161, 116852), (223, 84364), (262, 71806), (322, 58426), (446, 42182), (524, 35903), (644, 29213), (892, 21091), (917, 20516), (1561, 12052), (1834, 10258), (3013, 6244), (3122, 6026), (3668, 5129)]