19987154

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{809}}^1\times {\mathrm{1123}}^1$

素因数の和:1945

約数の個数: 16

約数和(自身を含む): 32775840

約数和(自身を除く): 12788686

約数列:

[1, 2, 11, 22, 809, 1123, 1618, 2246, 8899, 12353, 17798, 24706, 908507, 1817014, 9993577, 19987154]

約数ペア:

[(1, 19987154), (2, 9993577), (11, 1817014), (22, 908507), (809, 24706), (1123, 17798), (1618, 12353), (2246, 8899)]