18991192

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{853}}^1$

素因数の和:904

約数の個数: 48

約数和(自身を含む): 40889520

約数和(自身を除く): 21898328

約数列:

[1, 2, 4, 8, 11, 22, 23, 44, 46, 88, 92, 121, 184, 242, 253, 484, 506, 853, 968, 1012, 1706, 2024, 2783, 3412, 5566, 6824, 9383, 11132, 18766, 19619, 22264, 37532, 39238, 75064, 78476, 103213, 156952, 206426, 215809, 412852, 431618, 825704, 863236, 1726472, 2373899, 4747798, 9495596, 18991192]

約数ペア:

[(1, 18991192), (2, 9495596), (4, 4747798), (8, 2373899), (11, 1726472), (22, 863236), (23, 825704), (44, 431618), (46, 412852), (88, 215809), (92, 206426), (121, 156952), (184, 103213), (242, 78476), (253, 75064), (484, 39238), (506, 37532), (853, 22264), (968, 19619), (1012, 18766), (1706, 11132), (2024, 9383), (2783, 6824), (3412, 5566)]