18943281

素因数分解:

$3^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1373}}^1$

素因数の和:1462

約数の個数: 32

約数和(自身を含む): 32536320

約数和(自身を除く): 13593039

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 189, 219, 511, 657, 1373, 1533, 1971, 4119, 4599, 9611, 12357, 13797, 28833, 37071, 86499, 100229, 259497, 300687, 701603, 902061, 2104809, 2706183, 6314427, 18943281]

約数ペア:

[(1, 18943281), (3, 6314427), (7, 2706183), (9, 2104809), (21, 902061), (27, 701603), (63, 300687), (73, 259497), (189, 100229), (219, 86499), (511, 37071), (657, 28833), (1373, 13797), (1533, 12357), (1971, 9611), (4119, 4599)]