19989079

素因数分解:

${\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{73}}^2$

素因数の和:199

約数の個数: 18

約数和(自身を含む): 22995168

約数和(自身を除く): 3006089

約数列:

[1, 11, 31, 73, 121, 341, 803, 2263, 3751, 5329, 8833, 24893, 58619, 165199, 273823, 644809, 1817189, 19989079]

約数ペア:

[(1, 19989079), (11, 1817189), (31, 644809), (73, 273823), (121, 165199), (341, 58619), (803, 24893), (2263, 8833), (3751, 5329)]