20965473

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:219

約数の個数: 40

約数和(自身を含む): 32931360

約数和(自身を除く): 11965887

約数列:

[1, 3, 9, 27, 41, 59, 81, 107, 123, 177, 321, 369, 531, 963, 1107, 1593, 2419, 2889, 3321, 4387, 4779, 6313, 7257, 8667, 13161, 18939, 21771, 39483, 56817, 65313, 118449, 170451, 195939, 258833, 355347, 511353, 776499, 2329497, 6988491, 20965473]

約数ペア:

[(1, 20965473), (3, 6988491), (9, 2329497), (27, 776499), (41, 511353), (59, 355347), (81, 258833), (107, 195939), (123, 170451), (177, 118449), (321, 65313), (369, 56817), (531, 39483), (963, 21771), (1107, 18939), (1593, 13161), (2419, 8667), (2889, 7257), (3321, 6313), (4387, 4779)]