21253293

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 32820480

約数和(自身を除く): 11567187

約数列:

[1, 3, 9, 27, 41, 73, 123, 219, 263, 369, 657, 789, 1107, 1971, 2367, 2993, 7101, 8979, 10783, 19199, 26937, 32349, 57597, 80811, 97047, 172791, 291141, 518373, 787159, 2361477, 7084431, 21253293]

約数ペア:

[(1, 21253293), (3, 7084431), (9, 2361477), (27, 787159), (41, 518373), (73, 291141), (123, 172791), (219, 97047), (263, 80811), (369, 57597), (657, 32349), (789, 26937), (1107, 19199), (1971, 10783), (2367, 8979), (2993, 7101)]