18994228

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^2$

素因数の和:312

約数の個数: 36

約数和(自身を含む): 38116512

約数和(自身を除く): 19122284

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 137, 253, 274, 506, 548, 1012, 1507, 3014, 3151, 6028, 6302, 12604, 18769, 34661, 37538, 69322, 75076, 138644, 206459, 412918, 431687, 825836, 863374, 1726748, 4748557, 9497114, 18994228]

約数ペア:

[(1, 18994228), (2, 9497114), (4, 4748557), (11, 1726748), (22, 863374), (23, 825836), (44, 431687), (46, 412918), (92, 206459), (137, 138644), (253, 75076), (274, 69322), (506, 37538), (548, 34661), (1012, 18769), (1507, 12604), (3014, 6302), (3151, 6028)]