21121648

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18593}}^1$

素因数の和:18672

約数の個数: 20

約数和(自身を含む): 41501808

約数和(自身を除く): 20380160

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18593, 37186, 74372, 148744, 297488, 1320103, 2640206, 5280412, 10560824, 21121648]

約数ペア:

[(1, 21121648), (2, 10560824), (4, 5280412), (8, 2640206), (16, 1320103), (71, 297488), (142, 148744), (284, 74372), (568, 37186), (1136, 18593)]