18320236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 37433088

約数和(自身を除く): 19112852

約数列:

[1, 2, 4, 11, 22, 23, 43, 44, 46, 86, 92, 172, 253, 421, 473, 506, 842, 946, 989, 1012, 1684, 1892, 1978, 3956, 4631, 9262, 9683, 10879, 18103, 18524, 19366, 21758, 36206, 38732, 43516, 72412, 106513, 199133, 213026, 398266, 416369, 426052, 796532, 832738, 1665476, 4580059, 9160118, 18320236]

約数ペア:

[(1, 18320236), (2, 9160118), (4, 4580059), (11, 1665476), (22, 832738), (23, 796532), (43, 426052), (44, 416369), (46, 398266), (86, 213026), (92, 199133), (172, 106513), (253, 72412), (421, 43516), (473, 38732), (506, 36206), (842, 21758), (946, 19366), (989, 18524), (1012, 18103), (1684, 10879), (1892, 9683), (1978, 9262), (3956, 4631)]