21340642

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{10789}}^1$

素因数の和:10857

約数の個数: 16

約数和(自身を含む): 34182720

約数和(自身を除く): 12842078

約数列:

[1, 2, 23, 43, 46, 86, 989, 1978, 10789, 21578, 248147, 463927, 496294, 927854, 10670321, 21340642]

約数ペア:

[(1, 21340642), (2, 10670321), (23, 927854), (43, 496294), (46, 463927), (86, 248147), (989, 21578), (1978, 10789)]