19513131

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{547}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 30302208

約数和(自身を除く): 10789077

約数列:

[1, 3, 11, 23, 33, 47, 69, 141, 253, 517, 547, 759, 1081, 1551, 1641, 3243, 6017, 11891, 12581, 18051, 25709, 35673, 37743, 77127, 138391, 282799, 415173, 591307, 848397, 1773921, 6504377, 19513131]

約数ペア:

[(1, 19513131), (3, 6504377), (11, 1773921), (23, 848397), (33, 591307), (47, 415173), (69, 282799), (141, 138391), (253, 77127), (517, 37743), (547, 35673), (759, 25709), (1081, 18051), (1551, 12581), (1641, 11891), (3243, 6017)]