18992743

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{211}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 24361344

約数和(自身を除く): 5368601

約数列:

[1, 7, 11, 49, 77, 167, 211, 539, 1169, 1477, 1837, 2321, 8183, 10339, 12859, 16247, 35237, 90013, 113729, 246659, 387607, 1726613, 2713249, 18992743]

約数ペア:

[(1, 18992743), (7, 2713249), (11, 1726613), (49, 387607), (77, 246659), (167, 113729), (211, 90013), (539, 35237), (1169, 16247), (1477, 12859), (1837, 10339), (2321, 8183)]