18123212

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 32321520

約数和(自身を除く): 14198308

約数列:

[1, 2, 4, 109, 197, 211, 218, 394, 422, 436, 788, 844, 21473, 22999, 41567, 42946, 45998, 83134, 85892, 91996, 166268, 4530803, 9061606, 18123212]

約数ペア:

[(1, 18123212), (2, 9061606), (4, 4530803), (109, 166268), (197, 91996), (211, 85892), (218, 83134), (394, 45998), (422, 42946), (436, 41567), (788, 22999), (844, 21473)]