21000307077

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{863251}}^1$

素因数の和:863330

約数の個数: 32

約数和(自身を含む): 33563237760

約数和(自身を除く): 12562930683

約数列:

[1, 3, 9, 17, 27, 51, 53, 153, 159, 459, 477, 901, 1431, 2703, 8109, 24327, 863251, 2589753, 7769259, 14675267, 23307777, 44025801, 45752303, 132077403, 137256909, 396232209, 411770727, 777789151, 1235312181, 2333367453, 7000102359, 21000307077]

約数ペア:

[(1, 21000307077), (3, 7000102359), (9, 2333367453), (17, 1235312181), (27, 777789151), (51, 411770727), (53, 396232209), (153, 137256909), (159, 132077403), (459, 45752303), (477, 44025801), (901, 23307777), (1431, 14675267), (2703, 7769259), (8109, 2589753), (24327, 863251)]