21993425

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{499}}^1$

素因数の和:593

約数の個数: 24

約数和(自身を含む): 28644000

約数和(自身を除く): 6650575

約数列:

[1, 5, 25, 41, 43, 205, 215, 499, 1025, 1075, 1763, 2495, 8815, 12475, 20459, 21457, 44075, 102295, 107285, 511475, 536425, 879737, 4398685, 21993425]

約数ペア:

[(1, 21993425), (5, 4398685), (25, 879737), (41, 536425), (43, 511475), (205, 107285), (215, 102295), (499, 44075), (1025, 21457), (1075, 20459), (1763, 12475), (2495, 8815)]