21240862

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1\times {\mathrm{643}}^1$

素因数の和:927

約数の個数: 16

約数和(自身を含む): 32457600

約数和(自身を除く): 11216738

約数列:

[1, 2, 83, 166, 199, 398, 643, 1286, 16517, 33034, 53369, 106738, 127957, 255914, 10620431, 21240862]

約数ペア:

[(1, 21240862), (2, 10620431), (83, 255914), (166, 127957), (199, 106738), (398, 53369), (643, 33034), (1286, 16517)]