18729681

素因数分解:

$3^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:568

約数の個数: 16

約数和(自身を含む): 25392000

約数和(自身を除く): 6662319

約数列:

[1, 3, 137, 199, 229, 411, 597, 687, 27263, 31373, 45571, 81789, 94119, 136713, 6243227, 18729681]

約数ペア:

[(1, 18729681), (3, 6243227), (137, 136713), (199, 94119), (229, 81789), (411, 45571), (597, 31373), (687, 27263)]