18989816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7349}}^1$

素因数の和:7391

約数の個数: 32

約数和(自身を含む): 39690000

約数和(自身を除く): 20700184

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 7349, 14698, 29396, 58792, 124933, 139631, 249866, 279262, 499732, 558524, 999464, 1117048, 2373727, 4747454, 9494908, 18989816]

約数ペア:

[(1, 18989816), (2, 9494908), (4, 4747454), (8, 2373727), (17, 1117048), (19, 999464), (34, 558524), (38, 499732), (68, 279262), (76, 249866), (136, 139631), (152, 124933), (323, 58792), (646, 29396), (1292, 14698), (2584, 7349)]