19991631

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{3347}}^1$

素因数の和:3542

約数の個数: 16

約数和(自身を含む): 29248128

約数和(自身を除く): 9256497

約数列:

[1, 3, 11, 33, 181, 543, 1991, 3347, 5973, 10041, 36817, 110451, 605807, 1817421, 6663877, 19991631]

約数ペア:

[(1, 19991631), (3, 6663877), (11, 1817421), (33, 605807), (181, 110451), (543, 36817), (1991, 10041), (3347, 5973)]