18987213

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2069}}^1$

素因数の和:2121

約数の個数: 32

約数和(自身を含む): 31795200

約数和(自身を除く): 12807987

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 2069, 3059, 6207, 9177, 14483, 39311, 43449, 47587, 117933, 142761, 275177, 333109, 825531, 904153, 999327, 2712459, 6329071, 18987213]

約数ペア:

[(1, 18987213), (3, 6329071), (7, 2712459), (19, 999327), (21, 904153), (23, 825531), (57, 333109), (69, 275177), (133, 142761), (161, 117933), (399, 47587), (437, 43449), (483, 39311), (1311, 14483), (2069, 9177), (3059, 6207)]